{
  "manageEntity": {
    "action": "Update",
    "entityId": "638036736",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xeb96688d28d5fc0f7fbc2ff4d31a44dd5845ee1ad145b57ddc73a5e4fa61d871",
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    "signer": "0xC514BF8450eC76F3643255F49FD795ce37847921",
    "userId": "638036736"
  }
}