{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2132",
    "entityType": "User",
    "nonce": "0x2381e20734e8aba704f5dfbe2b81fd688a45fb01e1c49cff0cb4e8f6d6d00b63",
    "signature": "0x67208041f63cc186056ae60f8c5741242fbf28ee9be8defdabd19ce741f04c83004eba24b0406398a3b4ad53f499660dd22fa14b55577b2a14c2e19099ee4e031c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}