{
  "manageEntity": {
    "action": "Update",
    "entityId": "311529160",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x65cad07f3370db76b09666c4b38d9daf0d906fb706523c9e57bf323780bf8216",
    "signature": "0x10e71a66a761374760890a5f6266c2a0e293343ec46276dc5155bbeaa12d46ee1fdd8cccf0ee67a4aa87e3f45f43e2a15528393fc20d993cb47b4993cbdeb5741c",
    "signer": "0x3074f7E591e0C82fD63bd49E8e6F12C81546Aeae",
    "userId": "311529160"
  }
}