{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "49421",
    "entityType": "User",
    "nonce": "0x142defc7b5321cf5e328aefc2085c4f12e3ecdd8e6e76b65126a8ad2eded44a6",
    "signature": "0xdad5a183a1e560655d45cab1d2d85ff3393ce2263651732f6327a14ac5014e343fa4ee98ba110adbf8e0105667ce607f78cd7bcb285a15a8320cec6a74bb42a31c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}