{
  "manageEntity": {
    "action": "Save",
    "entityId": "1093694",
    "entityType": "Track",
    "nonce": "0x62e90e296c6e0e575cecedb9f570b6258b88f80cd46902d364fab96f1a4dd897",
    "signature": "0x5e4d5c3007aec148597fb7922e6b55f4a9b0d81759d2b0c8168560de840503661d56a2fae73010da2f42cd7afe890166c7a28f639be15f70a80bcee29a3e11a11b",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}