{
  "manageEntity": {
    "action": "Save",
    "entityId": "1337061406",
    "entityType": "Track",
    "nonce": "0xfc636bc76455d3fbca8a873fb718a916265ed088bc84e0584b58c0c9e773e2c4",
    "signature": "0x79f0f759ffc4e06353097881214cc6c17c43af943c57b0dccb10f2b941f20258632c8bff2e2b6cbccfd9bc143bc65652ff9edd39a9fb0aa9b01105b812e8c06a1b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}