{
  "manageEntity": {
    "action": "Update",
    "entityId": "735486174",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x86b35b00d3d81f5d7f92b2ece0cfa18cb7e658547fb21011caaa2e69e9178a04",
    "signature": "0x0503896c0be4a7dbbfa30e348b24b0199684f3dae6273598d3eb58413a94a5cc5aa30ab801ba95bc410730e5a4cd739d7a4fa6876ad414b3579853bba00eb2291c",
    "signer": "0xA12726cA2C11890143459beBC587Bcc551d6f387",
    "userId": "735486174"
  }
}