{
  "manageEntity": {
    "action": "Save",
    "entityId": "1399499253",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8756dda9002c8d1b80958ce507d262c3ce5349b2d12a171b64a973c9fcf8784c",
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    "signer": "0x03e9Caf2aeac5a0F0e4Be56410d67A4148D38Fd4",
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}