{
  "manageEntity": {
    "action": "Save",
    "entityId": "1732095852",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb4323ecb173e083c9e77aeb8688786684750929be7a7b72fc9eacac92c6bb597",
    "signature": "0xb5c14b70539e1d5f334d9549b6035b3bb920cef23be254c3b06e3c7bcbe20ecf371471382b9015fdfc2a869347751f2dbc99b123241ebb01326b25ec9c2e513b1b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}