{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257534016",
    "entityType": "User",
    "nonce": "0x8dae3b33f1f2ba764acf036c064f2a14471c9e82bd85df27c7dcbf264f24cd29",
    "signature": "0xb5aaa424b0eed87e5acc32336d17e36d67a2eccc7ec10bfed37ba6c5b3225ede469bb59602549700c8100752ce0c3913a3ab98f4d8efe690c484fe277ff7325a1b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}