{
  "manageEntity": {
    "action": "Save",
    "entityId": "173165",
    "entityType": "Track",
    "nonce": "0x79f1691c5a2b79305fad4e063fa72738f30fb2cdec114bf950e01604ea1bcd47",
    "signature": "0xa0ad7f1c06d1046c261a17153e5ae29a6dd806d4309a07fd49762d401c18cd7c29efa89fef388d1c1e1d0df07747971d4ef0eec79e7a8c98b481cbd1b14a74211b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}