{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2018276",
    "entityType": "User",
    "nonce": "0xe776192519d1986c629e274f42923feca8bd1cfe1c48f66deada207300b42a67",
    "signature": "0x39c749478f50b9ecfe5ae242d0ab6130042af0971f952e49f0f07ca68462d9ed026de97505fb83d072514bd5cecb305ce4c64b68daceaa7736035f5d7ccb9abf1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}