{
  "manageEntity": {
    "action": "Update",
    "entityId": "742768859",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9ca0d834d8ca8de04bc101262281eb751875055c9dc30b44dff81d41128ec4dc",
    "signature": "0xe2a2997cd0d511a3770a9ed393ca780db713732412ee6ffff8ab338214a427695b0caa9fe64a893acd1bf0126c43e2eaf4c8873946a4da68d79cfa3596aeb63b1c",
    "signer": "0x4df845f0a31d75ecdeF1019e502eCEBCb209BE06",
    "userId": "742768859"
  }
}