{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "635405835",
    "entityType": "User",
    "nonce": "0xaa175b4c431a1aac53d7b8623db920736b9bf255cb10abfc5a0462426d6e415e",
    "signature": "0xafbb1a059a73c1eb4ad36cd8a55785f7e0c9f039f25070ba7cf40293c7110e1c6d597195c5ef19a3c1e37e1d749e85afd6bc3cb68231bd92c1dc64197dcd8ca71c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}