{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbff771e2c244292f37116eec3566114023b7b6499aa89d6a725dec9e38ffe4b0",
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    "signer": "0x5b0A1dc2f6ccD45B1cd4F2E117E56e38507f66fD",
    "userId": "958315120"
  }
}