{
  "manageEntity": {
    "action": "Save",
    "entityId": "1169501896",
    "entityType": "Track",
    "nonce": "0x0ece951ddac6cad440e16c8dcf842e1bdaa55de7e50f33856f6b03bd46efad3b",
    "signature": "0xf23dc3494d3245f481def55be06d0a5596a16e877605d9717b5f50d3bc0961c01e7be869e2ec65f83b4fed1cd175b1b8f428d8623b071bc5749dc6904c1e26371c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}