{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb7e22281f1574a5fc3bb4115dc5fad8713a42565df4b549b4f3d03b230674a49",
    "signature": "0x084933d33ac74e785f85ecd751fd8c4d413da0f96ee4bc8b6525ed3d6f18dea54b65de49425c5bf0d49c2cb1e65e779c77d6e19cae3b3ddf6179aa960366d37b1b",
    "signer": "0x9B2c19D12666dd316e2A4f87E04c1B24d0a8255B",
    "userId": "385103139"
  }
}