{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103009781",
    "entityType": "User",
    "nonce": "0xa4bf3e81abd9b19c7000d476b412ab7f77c95cf6ba5144a0d3001e6432b8ce89",
    "signature": "0xe87c99a4b9a7c47e113ad87b9b4cb65dadcce175aa5e5054f444db25569b657f694ff9a5e970438010872137b444654f23858aaeb9c525d1b978adca577cfdf21c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}