{
  "manageEntity": {
    "action": "Save",
    "entityId": "343492119",
    "entityType": "Track",
    "nonce": "0xdef9386013d34152fdc37cb1e0067e7df15e94cf9073736b3baa39010ff98314",
    "signature": "0x033fa9876056a5a8e2fdf99f2f0f7589815157959329d683441a02e827608bee76ef404086ea9919edeeac6ca4f1101c2fb7785f4775586326a8209c01971aa41c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}