{
  "manageEntity": {
    "action": "Save",
    "entityId": "633182342",
    "entityType": "Track",
    "nonce": "0x2f2caa11629bed4c02b6d35e1e5d6c69758188f983b680c49f04b1da9e5e68a0",
    "signature": "0x3d273f400b760f76c9bbab063dc6e20ae51dab620a5d564540ffc527553d0cba0be081928bc0c4fecd84c6fdd4a6e404a86d468f84d23e6b63590012fe6e91b91c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}