{
  "manageEntity": {
    "action": "Update",
    "entityId": "387855363",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2b193f8ec2606caf9c8c6de1086a6bdb6aedef4023ca5e0e781fca3733cb659f",
    "signature": "0x10860ab1dd71494d20ee5c77ca3537bf2c0d76cde5a7cd0c14e193f85c879bd27333146bb98864c48018901484ecf631856f0a30efcadcb656f08c5c27af251b1b",
    "signer": "0x52BeffD1D714c5070669ac0f0c3b043Af8ceb0A4",
    "userId": "387855363"
  }
}