{
  "manageEntity": {
    "action": "Update",
    "entityId": "135075004",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x887cc6699aa6f20d56492911dfb4cb14fa58c78d8ac2bc5de4961a60a2d55a8e",
    "signature": "0x615f9e2452f10aa6d109833de4ff06ad5ba8d85aaa8c47808d853d6a8abe5f7e2415a63afb9ee4589f3bb0a39332fce7a0c1cf14cfbbc19775444ed6d23d16321b",
    "signer": "0x44eBDF6bd1f5Daf66bBebBd0C8b4545189785860",
    "userId": "135075004"
  }
}