{
  "manageEntity": {
    "action": "Save",
    "entityId": "1964171503",
    "entityType": "Track",
    "nonce": "0xba4c74555ff4b182cb862f93aefd3cf1a241f812a90da1f0c518190867014254",
    "signature": "0x62fe95679da7f5e894772421d8032c0a2cce9ba51ff9a4f0d3c9d3353cca81ca7dfacbbe4d69b5eebe67eb6f4d3436716b4080c6ea8b3e3307dcaed5f3b3c8fb1c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}