{
  "manageEntity": {
    "action": "Save",
    "entityId": "1166669277",
    "entityType": "Track",
    "nonce": "0x904d4641b852768abb52874fb6e9c76f96a62289f2179f77335bf102fcd0a645",
    "signature": "0x362de1f24d1f986067fe198d5418551f9ffab43740eabb61abf64d1423659ef54e2b682ec297c0b8b3fbf24fd19ed0f38325a5a0a7a63b90bb6901363f38c8331b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}