{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb3fba4d999ca76f10e3ff54ed20a1201111dd6ba5a59b9c6e62574255357ab72",
    "signature": "0xa28dc9f4967f3e0cc8702c1533d753140e1bdba99fff2bed8fd3b032f7a4df1b55a4b0bd2f0e6456111bbda3355785cdfcd289407a119981efd43595376d6b4d1b",
    "signer": "0xb566C50D62A2B7a66bD124a5d9AB3Dc2C7bD75c2",
    "userId": "444269439"
  }
}