{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "175201368",
    "entityType": "User",
    "nonce": "0x4dd7e2d8712666cd62b3ede20ef176d01950c742f58d792d8849902fb513261e",
    "signature": "0x2c5ec9a5ae9fa810897ab31654ef77668377d1e4db82506dc003fb07e3962f7c417f82408389a771ae413b8b7893d6f038a5d52fe8225f4e074d31be733655aa1c",
    "signer": "0x9de29362DF595E6949CaA2820c5c28c3D6b0CEe1",
    "userId": "857551474"
  }
}