{
  "manageEntity": {
    "action": "Save",
    "entityId": "36850",
    "entityType": "Track",
    "nonce": "0xe17516fc79af0dbc466ccac386d7b519800403093a91d2e0592841c083f61e07",
    "signature": "0x6a7bd973c6986709954842da8eb983b135f3d1214b9459a609e34b77462cc46a74cd5cd034e13de3429f11ef46f576186d7bc06ff1f0e637b1b4682dea75a2541c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}