{
  "manageEntity": {
    "action": "Save",
    "entityId": "1031759599",
    "entityType": "Track",
    "nonce": "0x93a027694b559bcf88eafdd31d68220eb07b518eb032157642add01bcbcffb8d",
    "signature": "0xaa3913ae0db094dc0d932300df777fce6b1f5e7f565669cb2919183b558897cf7b6c3d69253ba38e1edd84194312d0fbf82a5d831b2560ef5bf064997c4d35ee1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}