{
  "manageEntity": {
    "action": "Update",
    "entityId": "799793973",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6cdc494dd51d741eda083cff0b04c2f6034524c6630a7725738531ed7d39cfbb",
    "signature": "0x3916132b3875535a934389a154df660f75891a9702242b42a8c8c2b09929eef368110a0d3c8ffbb823ac596bdffe251e8b22dc330e337be1e928e5f3d9b62e0f1c",
    "signer": "0x4EFab23E68efB7e12906e915F64386b250B4EAd4",
    "userId": "799793973"
  }
}