{
  "manageEntity": {
    "action": "Update",
    "entityId": "770031034",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2c422b337790780d0105fbc9ad61e33e5f7d90b201a3b6b1208a469f933cef65",
    "signature": "0x3b683dc5bf7ff5297d16d91d950f03733971716d4354b01efdd0b380beea757f2fc38915fad44fda581ee6cc767279f5e514eb6ebc25e18738077794afa7ad291b",
    "signer": "0x5704a6cACD81be1f7Aa2FA1b9B3c575Ad279Bd77",
    "userId": "770031034"
  }
}