{
  "manageEntity": {
    "action": "Save",
    "entityId": "792254288",
    "entityType": "Track",
    "nonce": "0x8116eb42ece995ef9ed6afbe43ee39fc058984cd87c866e1ff32b9933a8966cd",
    "signature": "0xbeb34373b1f23edb9e864e6375d3741a24be9aa86dd22b9b5753b8d3c4713dd45d53092b0f5ffb06687d410183530b7b813c95e8fbd3fc1a225a2c54bdf352d01c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}