{
  "manageEntity": {
    "action": "Update",
    "entityId": "738717867",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2001eb85a2c6e6ea65bffe9042a98fa4d39ae0e3ae77faedc34c8f962f771a69",
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    "signer": "0x57E607CA5C91D00d86142931D0381Ec60C468871",
    "userId": "738717867"
  }
}