{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319895",
    "entityType": "User",
    "nonce": "0x96d20eb6a8b816c13ba31411ccdb7a21c57916acfb5d3a923a2d21a943a28f67",
    "signature": "0x50057d04dc47f1f51d9328c46974c918ed77d3b6e38f8d2b12476959a2f0ead95cc46c5eb5d59dc6e0a35a21cb9a481ebd97ec6dcb31416949b88cf7726d7a2b1b",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}