{
  "manageEntity": {
    "action": "Save",
    "entityId": "125677283",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7f73e8caea1f3ce3efdeced850a4f5f1acc15678fa1e0ab81f250a54df50f327",
    "signature": "0x27adb4c77589afd13d0f1e683b89e2168f3060eb45cffc713c7bb5702a659cfa2823983d021e210a0847f6f9a14d3e4da5eeaeea0ed242360811a1a9818464ee1b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}