{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa1ea338b65ffc389e3e2c4a5f2409f8c10abb727d1433b3cb4a289b6ca59e6ef",
    "signature": "0x8f3652f56e9a03e1d3f1667630d7373ff246941938f25258cbd7abdf99ce507172475532d44dcb8f31e2b1b5edc1b9e8a9586fe2129f87eb499f81fe23c734d51c",
    "signer": "0x46ECf83B77C4b8bEa00d024616B7522C53096eb0",
    "userId": "654574340"
  }
}