{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf0d3ba2af04c2cb93d83467eeb82f89f2682ea818681bbd5210087d37051117e",
    "signature": "0x461540fe50a37f42cdb77f5b5c142afbc49b73ecbb709308deb744ba807b3cfb093566310bf34c08d8b04b6c985551326b491cd3ca3e7ae76d4b3a2303393b011c",
    "signer": "0x2737E86462181047fA96EFde30A314D02FA2543b",
    "userId": "138721477"
  }
}