{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "906222947",
    "entityType": "User",
    "nonce": "0xa43266e2b77c7857b235af878784583d4f403cc19c408633221f3a5f3dcebbf1",
    "signature": "0xf0089db65bb75ae16f475de3fcb154ecbdca3017f25b7c43d4aad31f9a6f92493b9a3f8abfd64f728d6b43d7a628f01b7aaf8b146a518e5886bd2eb301bb04d51c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}