{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xb86257387bf150757901483ee6c13b1520f9fda09911538e38efe0b3d1051599",
    "signature": "0x79516682e9317fef2a545776776cfeef4c18823fe1557a719fb8f040c6b8434d61cccfdc975e6e7bb9fd8058333cf67e42a9ec3dc80cf963d6fb2979432ecb4e1b",
    "signer": "0x3aBfdda7Fe70573Bf3a32f951e6cFf35e8E00047",
    "userId": "465093414"
  }
}