{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0xd4cb1f48a45db9f8f76899a597d80ff31309eb6cbbdc72683ea276cd512b0213",
    "signature": "0x4a49716cc5bcd4abdaf44773e10c57f6f144a3d6a17919c24cd3f803d5f79ff46ecc4149095e92ee6a3bb565004212552c9319b03eb9b83519d36081b923a4631c",
    "signer": "0x21370B7a703524cC2941323C2c960224021F8D56",
    "userId": "986168993"
  }
}