{
  "manageEntity": {
    "action": "Save",
    "entityId": "1334180554",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb66a3f95b01c8be099bcf349ccded92ebf339b2a7e1566b6e75bd110ec2fcb0c",
    "signature": "0xf920ecd42de181e3bfaa185f036492b3e9034937ed9c10c551bdf4fc91519c2224735d16bd95412a5d44043616f650935c89d67256ee019c860f62a2ea422cd91c",
    "signer": "0x48997477d821e30d3Fa835d1Ee7809B3253Cb100",
    "userId": "75085"
  }
}