{
  "manageEntity": {
    "action": "Update",
    "entityId": "116504833",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3e1d1e9737b7d309a41eae04e27cc6dfd2e156d81f26eb2920308e6d50f39c0a",
    "signature": "0x6fb31f38981fed7571d6d1c2db0d265937b725dd3a38c75c92a5bcfa5ebcbaea38e49fabe653aa0f8d6fbd67adb872082c472efab2b5b81139586c1bd4286b591b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}