{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "985448570",
    "entityType": "User",
    "nonce": "0xb80d36e94069cc8e2ecd0347690d71549e1e39c8819a8e80d296b47e0c2a84c1",
    "signature": "0xfde9db9ed230f59954b9f8aa8765486098ef1c69874999706924d3d7ebb570ab2804668f50ae595509926e56a5492d5b48110361ac7e8b0c1271884cc9e6b92f1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}