{
  "manageEntity": {
    "action": "Update",
    "entityId": "139585735",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2a37ba3ba3192869f26070e28c328aff9331471a5a56bfa42f4b99bc264b81b1",
    "signature": "0x4aa8fb4764c3adac55be82581e56547580f8ccc0ede854e490ce1a032f69dc581b8d7adc651afa16a82bfb6e5587a3c2321fdb06f6f2cdd16c364d068d5793b11b",
    "signer": "0xC44BC4EdEd8fF07EA4F8432439Fc7A10111e5e82",
    "userId": "139585735"
  }
}