{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xa29e6c10be5cb8515295a1fe9499aa6f8664d9e5b426a99e1c000c38d95572d6",
    "signature": "0x939ac8243f820bcb11c95111dc5d2ac879e37d45bd4be50435bb46c549ed032e05d6f193e509da47ef85fa5a6be15d5e38b2b1c7e84bb4fe93b62b3deae0fccf1c",
    "signer": "0xdd9866f5231155D8450f557CF6216590fAeE2900",
    "userId": "697765896"
  }
}