{
  "manageEntity": {
    "action": "Update",
    "entityId": "108308523",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4d0b538c3d56d5016f94c141cf03ae783be55364905520055217f34fe50c00a3",
    "signature": "0xbeaa68fb1e9a6083a6e452e434f4e283f4c05f5f3dd60705298efae2728e549334f21e74987072a086dac9cca1de71da675adbe15ead9a57204e6138df0b2b211b",
    "signer": "0xe862752d5754CA4034035D0c731bA7De15D49Ff5",
    "userId": "108308523"
  }
}