{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x61d5f8e8a6443ac7b8904c03b802f919247da5d434ad824ead9fb486e6d74e08",
    "signature": "0x1cc063db93be21af633c7a800ae2f6f7ebe4f27b83652f8ab05684d629ec315249f447b29cc44aa7fa1dcf5cbc201fd644e11561796997ed87807f2ba8c73f851b",
    "signer": "0xc6fd3647C5AB313662D9c57950B0396C35709925",
    "userId": "219072894"
  }
}