{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0xc37283611a6a5008afca09f3a34c0eb8c64ec55c47955dc55648758bb384aeab",
    "signature": "0xe8fba4e601816425c7476dd130bac89f382d6b75d8f38a39206b4c3726210f7b23d340f38ddc85b8a0ad24a5635ab70b4ae4fa63daccc767656e21fc0f2705971c",
    "signer": "0xd9bA17330fFb3Ea1356C5eC14971D9e1f2cb5200",
    "userId": "337125448"
  }
}