{
  "manageEntity": {
    "action": "Save",
    "entityId": "163392",
    "entityType": "Track",
    "nonce": "0xc29a5cf458656ce7a80dde7998dfc3319710e0c681c284e8fc127a55507cebf9",
    "signature": "0x8516ab130e9b3dcceb4a5619bbea19813c39f0c01d82025f176fc6dcc5daad0a7941b754f80c89f70f9be47595f5406970216ac1af7ed4b0e8c122237926a4191b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}