{
  "manageEntity": {
    "action": "Save",
    "entityId": "1714962765",
    "entityType": "Track",
    "nonce": "0x6749afc5304ca3e5d3879717d70eed88da99754bf3d8122e2fd393cdf562af87",
    "signature": "0x32fe00c49581dfbf9a73beb8d55a055f1353eed6ff5c31887bf43a3159f3914a7515fd68aaf17378b2a2398ffa33b884693c25c2a19fc598ddc936d8b31467c11c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}