{
  "manageEntity": {
    "action": "Save",
    "entityId": "789098339",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2688cf1e0954b2c99c84fa5564ca72daf866dff0c714e3d0461519197a90c782",
    "signature": "0x2df562fd4aa3ef69d8369ce757a52523d25f1979e95ff15ce084a2191fcb03fc1b87fd7e5a01842c49903c0cb211b80e12db8ab209e24ae924b7b4e40278c1ea1b",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}