{
  "manageEntity": {
    "action": "Save",
    "entityId": "365315",
    "entityType": "Track",
    "nonce": "0x07f985cdec2e6a737d2a4865400bf7dc0f9f83280eaa3d2334f9f8eac208c4c2",
    "signature": "0x3bc5ffd10ec35684937ab3ab3f2be3faeed2477d9fc9e8013401d2616af2bf3f1ca0f4937a66197f052b8274898379791933fe16f5826cd345a084bf61cfc4941c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}