{
  "manageEntity": {
    "action": "Save",
    "entityId": "636467497",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6b58a08566e7a0cec14f9f8df86b05767e72371efee67613ac38e215f1618267",
    "signature": "0x110e48af6e1d52633ae628378ff84bc6a45811cf92acb9e71498aaaafc8cadd86cc5bcb34275992cde9aa43fc859798c9c7a167cab3cf7f2de7106b1c4c804d91b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}