{
  "manageEntity": {
    "action": "Update",
    "entityId": "348420823",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaaaeb69716a3f691863cb456a7197f3e92139b6b3bd67af18ca827073857bb5f",
    "signature": "0xd8314316aea87c4f7fe73a9ed7c747e3f8e0fcffd0c9211794516fa634b8970b781add603a95a5b2f2a5ac9ae33f9c1426441e046154ff0cfcdbb0a1d97282d61c",
    "signer": "0xD8a3987Efb79769bA8D452aC9Bd081DF45E48252",
    "userId": "348420823"
  }
}