{
  "manageEntity": {
    "action": "Update",
    "entityId": "923119708",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2d62db9f72588ec7c3651c443f60716ebbd25406cbb8be2a6b3d5b67ff63dbf8",
    "signature": "0x73886d46629420d9675f6a2c7c05c6fdcce91a84f715afe18ff55070e4a619ba62ed5fe243c6729e7b93e8cf247cfca27cbc33f66d371b385c43485f3ce192041b",
    "signer": "0x31E3CF79b2035cE2606cE62eC5A570fA4B240739",
    "userId": "923119708"
  }
}