{
  "manageEntity": {
    "action": "Update",
    "entityId": "907828722",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3dba8278ffff9576929aef773292d7f113978ef9f6812e70acc95061d476e823",
    "signature": "0x9375b412d641f847de3167615eb882ee83bc106547ba42453dc92eb67302bb07795129279ad11874f822291e404ffc182b5846e66f093127ce9d003728f65a2c1c",
    "signer": "0x3EB2614B7B52b94D8f8FdF0EB63BC9226df57e7d",
    "userId": "907828722"
  }
}