{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "974540489",
    "entityType": "User",
    "nonce": "0x748543af0fcab8cc3720d6519547929f7d89acdda510e85ce002d341f5a6c364",
    "signature": "0x15144ea55f74c1efa5d4a32f2df93da81d20c6f857a8c6165cf78209d9236d7d3b734cd1c2ff5257a150d0bb539a3c7d3079bba45fe8726dd1de9ddb466021be1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}