{
  "manageEntity": {
    "action": "Save",
    "entityId": "1081644738",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb607f0d3b67c4b75d6ee62bec272a1c6d513de5349347b055a7c8e1fa7acfbaa",
    "signature": "0xe0abcc607d394ac1506e767215c46d2d4d97764e0ec61bba27d0b3e6b58c23234754e6b66a0e2934a7c2a88db19a1d48698030fa25134db6b654fdb29b362bd11c",
    "signer": "0x03e9Caf2aeac5a0F0e4Be56410d67A4148D38Fd4",
    "userId": "47828528"
  }
}