{
  "manageEntity": {
    "action": "Update",
    "entityId": "255544284",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6de7a1d88326eff7af4c5fa6ee7da3d6c5f26cafc218e61ab29efe08b359c51e",
    "signature": "0x63a6daa7304c54c4547d47c229d43f00e57cfcde126cd84e9acdeee1fcc476e618baef60f9bdfabba23af87b8966c23fc19740f44da4546a583a9dcb381b6ef51b",
    "signer": "0xe146b51A629Fb0fD2E28314C333218882Ef67DF4",
    "userId": "255544284"
  }
}