{
  "manageEntity": {
    "action": "Update",
    "entityId": "19571191",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe405e766ecfd191211f728ed5b51dda00ed7593c763e2abe58119c4d066bdb38",
    "signature": "0x35d7e775fdb908ca2da9fd743a88721e6d64c0ebdb9e434b17f59d5b3135e5c8069de87090d63d6119eb3ed182b2b71c35c6c21a287f198041eccc2631b0af881b",
    "signer": "0x268277a197a3A619749b1997ab92bb2475B0978C",
    "userId": "19571191"
  }
}