{
  "manageEntity": {
    "action": "Save",
    "entityId": "1270200132",
    "entityType": "Track",
    "nonce": "0xb213e43a24661f2740bc63719a2d5f4934258edfd1c9bad9d287bf391868c90e",
    "signature": "0xf6b8dd15adb785cb772c3c62d5d922be8d963c3a3c669d2d76dc16991862975518e83c242b24a4affd927636a692e893fbca72d8ff368ae041c61e5c12b466231b",
    "signer": "0x6802Fe39C5FA9f99ac1Aa32F164982185A3E70ea",
    "userId": "152482938"
  }
}