{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x117e1b891d641dd26c704e5cd88449e3df0073a1db5eb55c077e42d97f962c47",
    "signature": "0xa7083420d226193929ed55c2f471e67e7b99c58731ac8c50ad36a2740c013d1f4f99fc5a5da549c88e106108a1dfe9632a53090854c89d0b6ec2aff3f026b4501c",
    "signer": "0x9a823e89F23833ebA1E56815dFa76075018b62BC",
    "userId": "920573113"
  }
}