{
  "manageEntity": {
    "action": "Save",
    "entityId": "1565605216",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x67f0a23e8b1b6c59083b007b39adb31f20b8cd223592725a73701274ce74a8ad",
    "signature": "0x4bae5dcd32b4b34b664c2c61916bce4526c081945d53373341876bcbc78c3cec1cc3e095710c285d171605f0d5e7cea176de2eaf47ebf10dd4a133c2e7c67fd31b",
    "signer": "0x53d8e61f7BdCd69E26B5AAe8F197464091224DB4",
    "userId": "99786"
  }
}