{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x97e6d73065ef16a790989f848cfcfff7e6931a5534a33e5eda04f8edfc9de365",
    "signature": "0x5194c6171e5b4b4d6aff209a3b7f2e35906beae3aa6c18516a84d2c9d4046b0c31af677ca953c0b7bfde4fc50a72e7202d40d1aeaf77b318b330cd8e10c55ca91c",
    "signer": "0x051b9163dbF948951615b43209F237B276Cc75F2",
    "userId": "658335968"
  }
}