{
  "manageEntity": {
    "action": "Save",
    "entityId": "1324435459",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x98f3278d83802770cb7813d26e01c7942f3fbeda2da6609ab5a6cefb013e060f",
    "signature": "0x297adabb9679c09b3531496e5ffd52d57dd30c84588dbf0e8a6e64c95bc9b31344187c656bef93e1a62526fb4863f42ab63b0ede150f1fced0a5d77cf153fdc91c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}