{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x42b09f20db281142c196e957083f599bae967cce8067e540b57eb8a56e435865",
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    "signer": "0x46Af715139332D14cdB187A1066c0317874766ab",
    "userId": "615978746"
  }
}