{
  "manageEntity": {
    "action": "Save",
    "entityId": "1109809705",
    "entityType": "Track",
    "nonce": "0x68d8b08613524f753a1ec4908956277e58ade036b4323a5a21bbab88f16c6586",
    "signature": "0x885ef79744c7484a44c256c4301c5e6e364ef16a5b6d2cb8adfdf0791a1f73c104d7a1fc04e3245bc81a3b0db060a579f3eaa0370f106bdd4ef1f9c0309238871b",
    "signer": "0xB57F94Ef9a26d73E8b35D3f37FccD18BcC7eeE00",
    "userId": "850416615"
  }
}