{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311591173",
    "entityType": "User",
    "nonce": "0x55e75d597cbd333fc09f7605ee68a1e6f6a0b5375423ba45b61f52f14fc54c01",
    "signature": "0xd156fdd4bb94482eadbb0962cb9f74ab71d96c398e18922060ff7b4e42db85fe33be604b37cab9be3671d580589fca39b9a7381fec7cd5770c0e6e91cfa001801b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}