{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "105773",
    "entityType": "User",
    "nonce": "0x338d333b2d0d37400ef104e23ec23fbe34aed7b8de8badd09fe7496a94be7fd3",
    "signature": "0x04f888bcf80853d9ff131868d1e8090aecb82d31e0d59eb25b944f1a89cdf7916058b59369bff3cbf3ede93b97f5182d17bbe966bb522871f8cee748c7e40d921c",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}