{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9dd3bb483783009dfea442a64e8932f0eacf5a48d628ff82e543d1d37eeca403",
    "signature": "0x860e0788e71d9f876633a857b362a495d96c5a11fda2ea664d85716f61b7173e4b6a8c47c5d1b2e344475b9a58fa37c160e963d616a7310d92589c380b4a78651c",
    "signer": "0xB6977e46032867474008Cd2f452F2c7a140Ab305",
    "userId": "106614376"
  }
}