{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "248030700",
    "entityType": "User",
    "nonce": "0xe7d80c0979806fd7b9b2ae0fe9e14a38e05d781d862c648272837a984371a918",
    "signature": "0xea64b8ece9d9dc7a744fa1a3d04d4a02afbcbd8049d427b4d736bc6ed5094f06602d79311e84b217b3d3e4f55e2e68d0a13a3c10f3d10b3506670748580390681c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}