{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x57f7422c8abd2db4286e2f7197bd2a17499abb85ebb19629f0436a8c1c84a2d3",
    "signature": "0x8e187e65155a5a89c6a91904511e81c5838f5bc617c9c7e73ac7e579e3b07fbe0d442fa7fb73dd2f731c070d50d89d7c60d90b483ef8f83d69fe52d50f70ff511c",
    "signer": "0x2F50f86Be5E8E960a8A80aff85106ed93A2c681B",
    "userId": "778093041"
  }
}