{
  "manageEntity": {
    "action": "Update",
    "entityId": "549983695",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb91fdf3879461fb766c493da49b9f8edafd9e82a9e1e3590f9212bec5b332f85",
    "signature": "0x92b94ec77faec9b32bb71bae8e1994859eceecb88630a51957df5253ff9ff8b75c8e2e57836decc22393d505635c49f16b436033897b7f882d65d51fa2b405371c",
    "signer": "0x5877F7e1aB261CEa57f1734519117Ed49d50c8c3",
    "userId": "549983695"
  }
}