{
  "manageEntity": {
    "action": "Update",
    "entityId": "438156740",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2331866c5131b5246b1c3e26000d5cdd7f361bafc8d699366e42001c627da426",
    "signature": "0xc1da4b6fc24d9de5d56ed5430bceb2efd2991a05b7681018eac3285f1057d569181242a90fca73c7861201425c8c8ae95b178d505811362e4c950365ee18cae11c",
    "signer": "0xe6fbE11B11b240a0DF37662956fd7EfAF03A3aeD",
    "userId": "438156740"
  }
}