gistfile1.txt

curl -X 'POST' \
  'https://sandbox.e-sign.co.uk/v3/oauth/applications' \
  -H 'accept: application/json' \
  -H 'Authorization: Token token="3-s1gn2kSh4r3p01nt!"' \
  -H 'Content-Type: application/json' \
  -d '{
  "oauth_app": {
    "name": "Sharepoint user1",
    "redirect_uri": "https://test.com",
    "scopes": ["read_write"]
  }
}'

RETURNS

{
  "oauth_app": {
    "id": "0c52a929-74a0-4b94-b7dc-72d3304e1a27",
    "name": "Sharepoint user1",
    "redirect_uri": "https://test.com",
    "client_id": "1naoDaGQKr7Oi0r3rhRpNGMntCjjNTwRI-mC93RdoTg",
    "client_secret": "9c-UfoV4YUEZfme6UIQwTx99ir_NR4vOXlth3rEQJpM",
    "scopes": [
      "read_write"
    ]
  },
  "links": []
}