{
  "manageEntity": {
    "action": "Save",
    "entityId": "1759432750",
    "entityType": "Track",
    "nonce": "0x51198466e1ff72bfc159bce6a801050a44aa6e9153db2c56ebcb520203bd5f93",
    "signature": "0x0092f623f1a97e29889e9c85c468c4cfe68cf3905b94f9690f99709e4aaf2c5a54fedbd9e7fc663e0e432a874d136f8d083b06bd3a433bf5b6afb2b2751dfdb51c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}