{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x14c69ab916c37ae1e99273723c7bb866ad136a34bdc3a0f9e1ebcc0919b07813",
    "signature": "0x4690cb98a6ff421a8359c8eed71022a54b83380d2dc47b7da99338cc4751d6ac5b4024378b899440626a5d821b2a9d22866d3c7f20836cfebd29563983d351a91b",
    "signer": "0x48E351feedd188C58BD52c402d66aC0950E26058",
    "userId": "857238138"
  }
}