{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "546268271",
    "entityType": "User",
    "nonce": "0x5de52c771b3c3e8bc6f69c28ae7c64c10a6c15853cd5b1db76541ebdab87e78a",
    "signature": "0xc992e160abf6c57db739442e2268b503dc464ad35f3045b4582506d6114187ab4e52c04d7a236d0be7b1d1408cfc6bf9327b4b4326efde1ebf03ac5e4856c22d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}