{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7e7451661cbd2ae9a830e4ace5199b0f3baa904ae3a2a0e2cf523b18c65d4dc5",
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    "signer": "0xCD5fA46e77dE37E49A2c5709b901da7BbA2c0740",
    "userId": "291387363"
  }
}