{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x078499ba47deff04ac5e6049564f8617627aeec1bf6df9f133e43f33f5419d2d",
    "signature": "0x57eae8bb9f828ef571c83c29e0ad21cf54a22963d6ccc38f558abc05bc3b5a2d628a0b2b623b548d3c4e8ce0124fd82b5625863e4995a8e60dcd8196089837321b",
    "signer": "0x008667D019e1cC686AD810c8Dff7Af7072f82506",
    "userId": "934100762"
  }
}