{
  "manageEntity": {
    "action": "Save",
    "entityId": "2008587136",
    "entityType": "Track",
    "nonce": "0xb0879f72b7cf9383653b68dd2ad1738d4e833a3bebc06d8b8a3c739e58f13814",
    "signature": "0x40483061e46ac21f526d4ae318db1f9f7a66751cf8bbeed0ea67ea1cb6df7a617e831bb823f34efdaf63f77f5268ed570008b2af824cae5601759944bbd2f9101b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}