{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335392",
    "entityType": "User",
    "nonce": "0xf1c37c6ec5843452a2729ca5eaedded717624fa646c480ca0189a23db5b15b6d",
    "signature": "0xac2755d08d7bb63348efbf05444c5ff78c486999fee152da4f62f6a0d22b0fdd42072f4831e6f723f3a9ce382ed1cf8f75c78ad764fd3846f2d8e9556f98e29e1c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}