{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x31b00a159b175156719eb3a95343f548d35f832f9af4c3f2f51d72e27c3187d9",
    "signature": "0x3aceff5275d95ff88e6f275a3f7cbe5b98ba4137b5e5ea9b6aaddf26f78a20e47acef60c0003ddc612901ee14177d24bf6604cd5ab55d5485f35e5d56b3b3fd41c",
    "signer": "0x4B0a22A25ed0c580309e8a5565722854C6b7873A",
    "userId": "308261833"
  }
}