{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123004",
    "entityType": "User",
    "nonce": "0x501d0d21b57895a0faed0334e2cee672fc0c382786c57af61489aaa082c2cc9c",
    "signature": "0xb40efc6fa80cea8994a0f97b0c18c2347002cedbc2b056d5866a70431f2a3a117a714428aee3e5f707e0dfcf2816bd7dff625c65b8497fd686359bcf5a396ba81c",
    "signer": "0x9BaE2e1849D39772019b4AC3468e938a232f73ee",
    "userId": "948584098"
  }
}