{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x0a51a41719031996e2519ed4c6efc7947b532fc0a252d7e483089f3be62c0865",
    "signature": "0x1cdf18714e51e4388f06d6436e6270d2fe45dc135d88da978fb7b198bb9575c01658a8825866810e5e5ed07c605c653e335bc5bcfe2998fb38cf64c0fdbe37f71b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}