{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x28fb149a0c40cac3710f79a1e9cccd8947b92b78ed832026abecab26cda2e561",
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    "signer": "0xdec7966Da258F9C1aAf14704bB79ECA0f707cd9d",
    "userId": "260394700"
  }
}