{
  "manageEntity": {
    "action": "Save",
    "entityId": "1693055884",
    "entityType": "Track",
    "nonce": "0x93bdcf857676826faf7b1c6dcced18363a952394548abd2fe0ccaf1afbbc4098",
    "signature": "0xe07c2a9ec92b71a1d36543ab86ff49bed51ef2dfabf6cb6485c70c01196b86d52688c10fd1b05ccccf724a7dee23c2c6b1d49f3b4ccedca478129854e966dd741b",
    "signer": "0x06Ad5789cE045C5B0AeB97849051a7385CA95B4a",
    "userId": "270209897"
  }
}