{
  "manageEntity": {
    "action": "Save",
    "entityId": "1546022051",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x38fcbfc969375919899a6e25cd910c736d8cb1ff6c7f547e4fee2cbf75bb7882",
    "signature": "0x6c09afd2fb3e5573167cdebd19311503ad1fa391cc8ea70a6ffd1c0fed3d20283e662fca5295274ecdc222d1e18d9265a9f479fa34e80a6b40bb034aeb683a061c",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}