{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142343",
    "entityType": "User",
    "nonce": "0x0229a232117a0bfb6fff71cb20e6fff74f7e0a4fba466b755dbd85061050af62",
    "signature": "0x4ad5487abb0956d7444ba66610d4814565a75f957c2e9c4be9549b654cf20fd844e363bd1b4f3a3306357d3b7fcdb6e2262d60a684639492899d05dfcf58c75c1c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}