{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50623",
    "entityType": "User",
    "nonce": "0x896acdeb798480f1a78d64a3a44109de43c76e3f460e2790fd4ef4c939ecc208",
    "signature": "0x8a3a2b3b5a5c12880af78a644cbb9e2c8dd887c8453b86ec71fdc5e559576c2e5730748d95704475157ab764c40f43a1bf07726611d3b762fc1b0b55b55ab7771b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}