{
  "manageEntity": {
    "action": "Update",
    "entityId": "624790304",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb59fc3d4973e3a33ec798c70a28ffe6670fb9c283ca07d9ccad172d36c894e4c",
    "signature": "0x1a41f535debdedadc0f1a3940e414991f9c0ef7f3ad30ec4a81539372be2548d2590d0a789ba91303085ff24932e41def0af62677a4ef011d20bd2e5090d32d21c",
    "signer": "0xF7DBe9b843E977E69B3b4D2f71522339fe129359",
    "userId": "624790304"
  }
}