{
  "manageEntity": {
    "action": "Update",
    "entityId": "912828029",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7c3f68a0294cdc9465a7814332239aadad4fea863d30dce2ad992bb77fdc77f1",
    "signature": "0x61f5f2a73b55d1d168ca426fae0bcf8310cc0f2a353140f482612406e273cb311aa946f9139967631e761c292ef09aeb048a627678e420a5f9ae361abd64fb031c",
    "signer": "0xb02031C47DC27C326100727Af71940Cf636B43e1",
    "userId": "912828029"
  }
}