{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "558452493",
    "entityType": "User",
    "nonce": "0x5c2bdcb19519b4548fb902d7888003a973aa0b090e5a71c17eb37a2d9f21be17",
    "signature": "0x9105a21b47cc31c4b1325ee504c94e0d7af34f0893a3a194f88d1941ad5311dd3a9732da454a515a914659ea972d2633603a233a2d90cae175f951244cd60ae21b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}