{
  "manageEntity": {
    "action": "Update",
    "entityId": "990318452",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5c572a357bb9d718ca0dc66dc0f97cb88a2581d6b18b2a52e092fcf75096d5de",
    "signature": "0x848be41d1ce8f667323be5caaf43fac27f8d5b55fe55e5b9e8592f1f0358330736ed98d877f6346b17906bd80dd76b659ef90e6d6a802cd41ebeaf868e07e91e1b",
    "signer": "0x0Dd5FB5f8A42aafaA0Bb4E66d1860c057A1E3d36",
    "userId": "990318452"
  }
}