{
  "manageEntity": {
    "action": "Update",
    "entityId": "193463567",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc799a51c5d60f8e0b39fb3768f33baee839e253310bad191bdccd8348731c330",
    "signature": "0x66b96a019f86b76d020c50fda0a1c6a435d81412c0997947feb8945686b5d54e42e68f39b0db58deec2e40e76fed0feff706327e7c811053e221b40fe1aee3cb1b",
    "signer": "0xa4DC46FCAD6f12C17d6901fADb3826C76aBF186C",
    "userId": "193463567"
  }
}