{
  "manageEntity": {
    "action": "Save",
    "entityId": "1171970489",
    "entityType": "Track",
    "nonce": "0x0a1c7ec3bea5395c554d9543ecb904e80b3c4135f34592c16dfd3816fdf07f39",
    "signature": "0xe1af08cf76bb63ff0a4d00458d25affd858a7cb449eca8a86272ca265e110d4079094202a535ce47e93d013a20f8d0e2f547c42ef5fe1b3c7a6d2dafdd12d23b1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}