{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1722125",
    "entityType": "User",
    "nonce": "0x3a7d0cdca15a918f7a1e6aafbdc12337a5e56c6be0c7508051504520e6509c04",
    "signature": "0x855bb3b6ac711e191a567a6178c9dbd2869945f63a03fdfab26e8b5e76287cff49f5021fe92ac578d0a9a27f97a3844be9c98f774a49ae62fdc3870d8b7852821b",
    "signer": "0x594FDf069B8F803eE20CE92c1509071088CfBC77",
    "userId": "376200150"
  }
}