{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8527",
    "entityType": "User",
    "nonce": "0xc9ec4c0c60031b45a31f0ee2d11775c318059d8a1c9371947ce75b838379e488",
    "signature": "0x3d305494d5b84023a2388e44e68255e134dfc6258e62077a9816b9652f46ea68069bc03681703e673ede2d66364181489b769342c15584109cc7ba513875c40e1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}