{
  "manageEntity": {
    "action": "Save",
    "entityId": "53565",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7570b95f6beaaaccd704a8a439b1f4df6388a40147efc8ee227c8cad88d63770",
    "signature": "0x1b04516c43adb165e49baa0469dd9816c19a0b422f7fb94a1c13132fb9260135005f8aae8818d2b637065db4025e896670b3bd4c1377e142214dc8d173106e771c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}