{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe2d8b6a9b8752742a064b9799b251460426d8380ba0e8c78c5851c0885cd3218",
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    "signer": "0xba266E8eE950a069Ab77BF24c8959a2177fc87F9",
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}