{
  "manageEntity": {
    "action": "Save",
    "entityId": "220480147",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2773f1fda67e147a1fc505e22bf69308554575ad77f950ad80bafd4114a1fc81",
    "signature": "0xcbb3bbf4be2a989faac116323d095022efdc4a50a43bca54e450354ffa3ce6c059e2d0d7f42f65009e1bb79659540901e64e927588cc4b6eff49c6941469a6ca1c",
    "signer": "0x849938DF063059EbF6d907f55E72C083347C9343",
    "userId": "796529120"
  }
}