{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "409129",
    "entityType": "User",
    "nonce": "0x8216bf1583187a9a1378f266f6d4c72064f4973305b0329d6a32f2c4ae7766c5",
    "signature": "0x5393b8752036b90788d988ced15983fe2c062807e71fc4fc4fb039c9a24455e1392638d6888b14a475e41b1a075c80e7eb4b55d863cea6747a4c66323f0c4f701c",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}