{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "409129",
    "entityType": "User",
    "nonce": "0xbd91b3347d0fbc8aecae520eedeb1fdb60e253f4718ac5638834dd4fcc70edbd",
    "signature": "0x3064e616fd994b6320448b142d710373b9bfa7209bea5c9884fbbdb8cc894a1824f3ca04c77c39bb9b604c57129b531865de04a804843451205c1895dd44ac321c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}