{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50424",
    "entityType": "User",
    "nonce": "0x4c7fdecc5c143537689a0942988f890497c47d602384f6466535408cb80a39c0",
    "signature": "0x0242ec0730128d101960b89d6f06f532e3bbf382fa2d0bb07a12f2bd494dc94c1c6991bec5c385047dc6e68f8cd40e2cd7071beb60ff33037e2088dff8367de11b",
    "signer": "0xE9e4A57bb74F837875858a9bA11030fCbAc09A44",
    "userId": "469412615"
  }
}