{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x56b785b49df6bb126c6e729344f564f9e8690ba9c97f4df58d08e4159b388da9",
    "signature": "0xa1c9a5e19773f23f2118a37ec592a363ed83cd25efa4186ba12474df6162b6fc45f4e557080e27f6b93cf6f69be2cc29d2f09afa5e33cf835a51897d630d76d01b",
    "signer": "0x032aeF4a4a3d648af30998d7c8beb944012Dd83A",
    "userId": "837494260"
  }
}