{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "849737890",
    "entityType": "User",
    "nonce": "0xe648445dc13abf5de5651fe6e5d349f7ed51c47bae363ea9ae59b2a856d2171a",
    "signature": "0x3201a96b1c471996a769130d1e902c4a4cc3c8bcd4d2d3fda0f6196c8ad774815b8666681af3d5195f91600927f50cac3792e6e3802c17061c9b0082085944ba1b",
    "signer": "0x4a4E686a6442e2Fc2495a7d4363B25c583Ea3c3a",
    "userId": "34815"
  }
}