{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12570",
    "entityType": "User",
    "nonce": "0x7c3af7c7ae51b7cd1b8224cdfd391e70200007438d7828ed466e4f2776a8ce87",
    "signature": "0x905627a50902c48b6b88bd01b6248574461ef57af591c0d26993a61f27565faf0f45eb5e180916361de3c2c48ad3b5dd2aa34cc73e940cf6db84d78c954948e71c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}