{
  "manageEntity": {
    "action": "Save",
    "entityId": "1102127",
    "entityType": "Track",
    "nonce": "0xa82bfef769f387db295026560384117ec2219ecaf6db7c3e9a8492302850c5fc",
    "signature": "0x91ffb838115982126d1de2121626fc0e54ca688d455667f26d47566fa96783ae745879acdb96f220dd065189252037ac3ad2139bcd9fd54eddcac391fbb1b4561c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}