{
  "manageEntity": {
    "action": "Save",
    "entityId": "1346774479",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb5d60a53d30462b35b57093e131b57556de5afcd0f4e81af73a807f10ad5f354",
    "signature": "0x62bdadaf5c634b60935a29c166bd812fe1ef653d8437dd1b40484ae3e56b109e4fd8e683ff289fb69d5ffe629b22b9f2fdc3dd2ddf1ddff95cb90dab1e907b831b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}