{
  "manageEntity": {
    "action": "Save",
    "entityId": "1327836169",
    "entityType": "Track",
    "nonce": "0xbd2ae1b80be4b3c4176a129bb9c5cb55e559908627aa726a10cd19eb3d72f281",
    "signature": "0xf1b2354b7cede346e6cad12d32386c9e1c8ff4def75ecfbc5c0571b5dd57feba315edc11608fb150a0de2ddb3b29dbb5bdf157756a47cec05c5159533a0f24e51b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}