{
  "manageEntity": {
    "action": "Save",
    "entityId": "1132525456",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa14b4a2963f2c70df4bc73883f4d374602c0eefb8d311e7695160f47bcd421d1",
    "signature": "0xb2058022c2d8042c1691474453d169cacc1e5bd2e1449e01df25e2b531b7579d4b1daa5a3af14037b20f56a4ae14b6ba4fef95e267559e08c80609251443e0391c",
    "signer": "0x83543286A020B366C751fFFF836E2aE3996D3B1d",
    "userId": "410522515"
  }
}