{
  "manageEntity": {
    "action": "Save",
    "entityId": "80385",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x666fcf3b3f97fd42b283e2231d69f426b7325489808dc256e6e1fb2ed1a5144f",
    "signature": "0xdf3ccb2e21bd53e54361f8d7caf41d6855018032d82fd63cc70c31d70aaf1fc415a7126f098de4176430dba858ef09380297dbfc3b84372eca81f819aec4e85b1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}