{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x606a8e4eabff450347c7c111b3edd4b720ed8c6d509fcc462ac8ea9a3b68c727",
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    "signer": "0x04d2AeF69165e1c1d73288e89Bf7e0Bf14608308",
    "userId": "501224594"
  }
}