{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x57cd38622361e64108d5f265477f781b84825b8c33c74c03f23419219011ee31",
    "signature": "0x617ea8a2f374339cee93fa35c6747a7e106ca3fa8f4f222591cae8cc6ed87d2c4651ab21d7be76f47094bfda7f25a2c675eeb731ff6ce83ce6691fc0e9dfbe961b",
    "signer": "0x292eF57C1FAAc86008ab58D5116e0ba424C9189b",
    "userId": "721084704"
  }
}