{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x009b0cde47ba90b1f8ead6b478a95e0e2ff2f1ad05968665754d6f5f08b95c7f",
    "signature": "0x43eca9ccb7e6939d347d6506e3e503d2acf77cb060a456499ca1b991dba4672f4119abb3766c7914e426a3dc4ece7ff0c8209386345d771270ac15c0d14ada411c",
    "signer": "0x3fc6977F078518199fc2dcC881c7fbF20c23C549",
    "userId": "402584481"
  }
}