{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd8dbc9d1661de93990644d4439d6ef1acc3d7d3f9c02f9596ffa897fa5493517",
    "signature": "0x43306689abb4c904aa36ea297a17b8933dfe01ee86cc3affd04f0cb3fc3dff046b1523de8e6c1fc0812077c13fc8cd2790b8ff4ceed15fa77d61aef28331e1461b",
    "signer": "0x338073d8095c0dd589C0f4eCB6fE77788E699d67",
    "userId": "669970279"
  }
}