{
  "manageEntity": {
    "action": "Save",
    "entityId": "59549283",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdbbbbc33fde7ca6cfd0bb1338b9ec088d69f4f1a5d9216621561cb2862987e06",
    "signature": "0x346fc479f001e57c15b3ff7f354f2d69f5922f89a534e50134aea53b570104b34bb1bad71a10006b8ac86bf302ac0ebf5eaeba8f8998cc0d21543132b00f93fc1c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}