{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x48f842804000c8ea4b91ebccdcacb4d5b0cca605a9a612d0ca5c00a794f201aa",
    "signature": "0x84e62621c21648df464f092b45e20e798b29c688b4390070c11443748c5b72cd35e23fa4fd852abd039b46ee1e68c860d34451603ab9df5f4cca4fda7101d7c71b",
    "signer": "0x43dCdB533Bf127Eb0De34a31D2C1bD2D9e0C9482",
    "userId": "768051251"
  }
}