{
  "manageEntity": {
    "action": "Save",
    "entityId": "991773056",
    "entityType": "Track",
    "nonce": "0x4116efe452125e5f3535c403ea52a79023617b0b01493b27dc8d339472a3acd4",
    "signature": "0x11a933b7acd35ac0750c012878d18e3dea2c3921429eca2242707ae3b7cd89f3180d0cf4f15df687ea469085a401350e3805542d3499df47bdd317ab4ee1d3721b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}