{
  "manageEntity": {
    "action": "Save",
    "entityId": "1028422226",
    "entityType": "Track",
    "nonce": "0x298b5841d8f248abd14f21045d52788f8a22ca614169c6301d818d0998af86a8",
    "signature": "0xc25728b8e70d5f4a099a440366e965726500211d16c5baa5d352ba3fae06abd11e7e1d3220e1cbf1b6a46a89636be5a33a1a28e67c40d6db6d74a5226225c6901c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}