{
  "manageEntity": {
    "action": "Save",
    "entityId": "1216755434",
    "entityType": "Track",
    "nonce": "0x716ed84a908dbf6262100cf26d0ff5c567da7d52784c83736c97d752d7e8cc0c",
    "signature": "0xf3b097653aed5b73bfa805e42a4feb489f946600fa251d6d86e324769e7659dd6131adecf6aa680dc1c8dbb3311bb5a6a7691f65ec5c8eb7ca0d1f5583ffcc9c1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}