{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "473206562",
    "entityType": "User",
    "nonce": "0xb747ba683ea3c0ab2e882380c15aaa28751666179d331dd694be9aae6e26aca2",
    "signature": "0x3dcfe1c73bb34563d290685c6cd620fdedc828e87701697e2f7d9cba7a4e53e9177c79d5032f54077c23d2b4db73515f7d7cc712f0c7ad23b2f2ffd69414e0e31c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}