{
  "manageEntity": {
    "action": "Save",
    "entityId": "2111142770",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5d61123f3b6f11dfad8dab274d935fcc39017f8415c473b6f9e5efc97583f6e2",
    "signature": "0xb74e9337927a865bcdd5fd4896ffafad5bf11449afd7fbe247a948d7e55d1a8003e17141960dadcb2fa6cf5d58e3b08f8c12628381b5eb38ff92fa3cbf8a57c91b",
    "signer": "0x06Ad5789cE045C5B0AeB97849051a7385CA95B4a",
    "userId": "270209897"
  }
}