{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x50dbecbe28061d71983cdf503e1fcb6b1c5f27338fe612a3cdf182c217380199",
    "signature": "0x741d5af2d3d8fd9a952053ca41c442e2dee5c1cc850d6676b7d9ca4a4a974931759faf51be9a27bd16cd134a267df811e741b001dbb6f07e41a92b140fa53c1c1c",
    "signer": "0xe690f07dB9A4F131d24D81555B655d9d970abFEC",
    "userId": "533238558"
  }
}