{
  "manageEntity": {
    "action": "Save",
    "entityId": "1422880728",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9f60f7a86716b0cbb356edb3cfa7a5bfb2d62a5d8fec56447668c89d3f3bef96",
    "signature": "0x5f22548d0091f93f1360f0838a3bfce96288284010c06410dbe0fd15628a763c489c4bb42e969ecef19c1beae6647a7312baaa4cf241869d37135499b68a3ffb1b",
    "signer": "0x38C35E6d98e3a8e47c96Cc5d8e8DC05C8797Ce75",
    "userId": "266305231"
  }
}