{
  "manageEntity": {
    "action": "Update",
    "entityId": "564057429",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1f1641d906a6459ee595f9f68d66585af3ebacf10a9bc3150c0c4685cb194a36",
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    "signer": "0xD44d14BfB53FEb80E62e094811000875cabF36B9",
    "userId": "564057429"
  }
}