{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "122774",
    "entityType": "User",
    "nonce": "0x02fdf7c4ee9a23f835fdafbc6fa5f25a31c177754703a3868ec2fa9e35d07c14",
    "signature": "0xe6421109e33c8cd76d5a1b5d13754f1b47f347b1842d1bc3d6a43f50b1e215c60f1b49ed4e505ccabe1af22fb8cc86fee29700e1bfa600101053128622c100d01b",
    "signer": "0x48ECe992edB7C739B36f37DDbE8Fe352996B5A56",
    "userId": "183063753"
  }
}