{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10449019",
    "entityType": "User",
    "nonce": "0x1a11235c6d4bb327aa75437e39ec5059b43a673f49cc164819437275ffcc95b3",
    "signature": "0xe87b5a3dab5ec5eb40c4e146cc039b96ed81b94a42264e2083f62f0bbf22fc8f24defe97d90cc07134a3824fb9422fc1bc7480b0e8b00e6de67e89c85fabba041c",
    "signer": "0x316933E449A0b429014E405447c447C9Bc472bE9",
    "userId": "451684863"
  }
}