{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf07c6e55a155dd1566ad90da97b4a3e359cf8182731573c0b4388f3c68cd17ef",
    "signature": "0x7c85f89d472e27ba4661b80e62821884f227dbd8ea31d4f59ac7edcb6a24343d18eddaf93dbb3c4e4985f910a4388796839312b23707e5e098db0fc8df66d08b1c",
    "signer": "0x745c840D2691AC877854D3019Eec04b2376Dd90F",
    "userId": "489949969"
  }
}