{
  "manageEntity": {
    "action": "Save",
    "entityId": "702232097",
    "entityType": "Track",
    "nonce": "0x7a0dc1b29d78e513ac22d84e292fdb83410bbaf122e67da1d69ed8e99c6aa573",
    "signature": "0x5a3f1c198367b21e41fc6f790ae87c14f1dbab34fbb97199b5b1852512028f94032e75f2309e473ad151c9d80f8e0bab30d824d337257289025df6bd3cf67d061c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}