{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x5a39f2a89b1eec21321a7b01cc897d26434c918ca1d85617ad67aeba31b27603",
    "signature": "0x0d1e9701c24f0eabe6d2e664599dcacc536c9933882d177f44140bb38b7828f85fa799211a2f49c5bdbe3b0ad460420124ccadc66f3f7861572ec25b6fcd816c1c",
    "signer": "0xC75a276D0a36850045510B0483E737bCDd1F5E9b",
    "userId": "588125677"
  }
}