{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x555ab3705dfc684ce8786b272ff90e1d713e50b4825501991c6bd1a946441eb8",
    "signature": "0xaca4b8a1e1297cfce9786666d437f2e3de9f83e4c74e3cc80a70ae94304bee883b25ebcba190ef51282e6d9de56a9879dd775f6778540760d98e8550fadd43521c",
    "signer": "0xbdB8eA7Aa50C113b1755Ee2985da6D2DC957FE4A",
    "userId": "941711771"
  }
}