{
  "manageEntity": {
    "action": "Update",
    "entityId": "418312750",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x26146e0f4c381c8ce096c9fe5ba8b7845f38bd9043c97d10f3288113cbfab890",
    "signature": "0x50f146301877ea14dce678b101cfa84258bc943bf1f5a13a14b827e86abc837b7839f2c467237f8942e8ac65e657dcbd45fad486c3b06819f621daad9fb6c9851b",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}