{
  "manageEntity": {
    "action": "Save",
    "entityId": "1601281437",
    "entityType": "Track",
    "nonce": "0xf2f98c3c635c657588187c02ce3f7427fc8c813bf0e55892efaf3bc7ef4caa3e",
    "signature": "0xbf80e6c8a58cc43464dad373cd82ba44109222b1678035081f343220b96769406857e8c5e8d6d9a43886bbb03c8450e5ee43b438db1a576bb892a33c4777142b1b",
    "signer": "0xca797dA7dCB793742623d55EA81fb92A9566B550",
    "userId": "363062902"
  }
}