{
  "manageEntity": {
    "action": "Update",
    "entityId": "785201",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0f66a84293dc2915ddbcb78fd54c41e071639f3364e2bb4390327137ccd525a1",
    "signature": "0x0561be161def6555ebc8c906cea622ae17bcc904a1c649b9efc092f00a9d518b32058af0b38ac918d3492cf1037734957b5e551657414a03b680b8ed7ad52ccd1b",
    "signer": "0x7C3854df2708D5dc9d22bA310Bc0f73C074f0321",
    "userId": "785201"
  }
}