{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5642",
    "entityType": "User",
    "nonce": "0x6ffce074d4771a37cd0603f86ad8233c72fba204881250ab7f85fe581fa0cbf4",
    "signature": "0xfad068ba74a375bc9994e03758696e69547bce77f3846e56599b5e3772d79ee86a811e9f01365e715accaacfda220db646ce617d0c9a4462729b7ea117f6d73e1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}