{
  "manageEntity": {
    "action": "Save",
    "entityId": "2027708521",
    "entityType": "Track",
    "nonce": "0x3fb5b0bb85f4351df430893acb27940f3c5784e004433d45360def871e978027",
    "signature": "0x78008368bf7521f1496c59a2b049f41460aa72977ab4bd06e5ee27d4e7f9c1dd4352536a562c1211d621a37c6b4f30401bcacea816636a4f954a847e4ba9f9dd1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}