{
  "manageEntity": {
    "action": "Update",
    "entityId": "328056745",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8b3844c72ecb8ca1c4fe71c43a6842f8ce99b447963b4e97941c4f6af0e720f4",
    "signature": "0xfe66e579f56c0b915a778ab26fac3b7b4605da12580a7f0d5fdbf1adf4e5a8ee4b2f779a6e148430b23f6433829624dd76a483fb63576af350f5258b561f3a2f1c",
    "signer": "0x75d782C5a68f76DfA69c426479B6ad14383D035f",
    "userId": "328056745"
  }
}