{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456109",
    "entityType": "User",
    "nonce": "0x6d43ead7a42892eac601d07858ea572238352a9cbcac0dcd6545b5a9ebd8e2fe",
    "signature": "0xe08e10dd6f7843739b1ce6bc926ac49d6d587ef8563c33846eb4ad9bc19a0df070605a3ff5b61ace5a98a408615dc5bb822ec908afbf1d7a084e2013e9873c811b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}