{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5106",
    "entityType": "User",
    "nonce": "0x94fecc7cf43d23224d09aca663571d9c54234c9c5860eb1357c30e90b8860f3a",
    "signature": "0xc2589d87a3a19254382945db559be510685874a9234027a86870e597feaa2e91000fe7b621301e5141f5284446610bb06e0d119d2af7d663e4935c2031b825d71c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}