{
  "manageEntity": {
    "action": "Save",
    "entityId": "1091311795",
    "entityType": "Track",
    "nonce": "0x62540e41b6e2e775f0dd2ced54b3e903d476e1f86bbe030e62136cc8aeb3a979",
    "signature": "0xb30c07ee4caca5652d4a180d045059bcc5e3f6f5a5d5a01466e8948c3abf8c0c187266968ee1d76bc708ff6c4ca42804cafa0556a3eb7f795c95a704437172d81c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}