{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdfb1c31f84215dc2424458e206b25a98986c8183bec3c32566cd79f182718f79",
    "signature": "0x10c8588469a5faa0b6b1b1baf1a3028ef4d97284326cca7db14de5edd504afd47cd01bd81ee8e5db3255489b55a6d275ca46cea8c4bad3b365893f878cdfee941b",
    "signer": "0x5643DA6C36cb4e0D3b1cBd1e78312deaFfc3894f",
    "userId": "970316950"
  }
}