{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe86b58cbe316508a3ffcdd595846f2e86d30e75c0ed69f9c59bcfae3541c3b11",
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    "signer": "0xbE5Ce1b1adABb2947E61645529cd212e19C6AB76",
    "userId": "51783071"
  }
}