{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x614f61b0335505209324150598cdcee5712345ed0b49fb4b9bfe06d112ed55b0",
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    "signer": "0x84cF9C42D68454173Bbf62c32FB92f2dFB254842",
    "userId": "32972886"
  }
}