{
  "manageEntity": {
    "action": "Save",
    "entityId": "1969994609",
    "entityType": "Track",
    "nonce": "0xff47fbf4c9f8dbce0786a1530a732f570ac2279bf2efb557080dffbf7ea044bc",
    "signature": "0x7c25e0646c0fb31cccefc59b828bc31dd6f371b61a07fe77f3b2595592692ebd69a12ac15a3dba2b831604fef2e7db9ef55fd27704b3e3e84511c734bd970bba1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}