{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc9ba60610e5f4be08d0b681e6c5cb15e7a3a0c2d362b51bb0b7752d9cc0e005e",
    "signature": "0x2a3fe6a4adb3fc6206b914e26b71dc5a0abf9dd7def184168bbaf1858aa1c03e06f7bdb657cc1e95e393b817bb59ba726483b54da9720982eb7021ce74a760091c",
    "signer": "0x4cC9bB9360d4DB6F9B4F2BE398Ee9e982964f2B0",
    "userId": "609614723"
  }
}