{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "945139768",
    "entityType": "User",
    "nonce": "0xbd366158d778d514a3b89d9d79ec067c079f7b6c0194ba7804f68b35c53f8354",
    "signature": "0xaa4d7e9e484e9d8e4ff095a076b607ac7a17a8b3771d4d661b12695bc31733191fdb58b7875b680e8912520e1448f0996936d47f47eb2965caebae6980d7cbb81b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}