{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "393620456",
    "entityType": "User",
    "nonce": "0x1ef1df61c98393751c8cba9b058056929badf2591587c9ba3dc30bb72169bbb9",
    "signature": "0x8b971e39318fd3b1647ce8a5cdfbfe7e8f15a07b85190c85b07a698724726a887ffbb96bb868dbb9cd99d4fe2ad1bf9cf942a6035f9776f33076ebbb3229c4761b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}