{
  "manageEntity": {
    "action": "Save",
    "entityId": "1774156827",
    "entityType": "Track",
    "nonce": "0x50e071c19280a1f7224d62928f6724e6bd2ce33807efa382bdb2ec77e7d8a32d",
    "signature": "0x11bfda0ecdd091dd2c1e6f9b2b4c676d22c779164d4254597c81bf069940079c321876d0cb732a42ba58cdc9cca2bf3d267c9433f932b76ef64bfe94e52ae6ff1b",
    "signer": "0x90CBf7c9BBF688fd9Fa4029B96e1BC32b270cA24",
    "userId": "711459379"
  }
}