{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "756259243",
    "entityType": "User",
    "nonce": "0x76a236c5f00bd65fb1ab62f9be8e99f127f83ea7d4b92837ecf8a72e2ab644f6",
    "signature": "0x546fa344554678affd6d5ae8fdad9c022eed1413dcde52f854e1b129371b310a3dfca0e45bb4e1dd757e6332c0964cf834bf9c809e9da2d373806012d7e149f51b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}