{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54545",
    "entityType": "User",
    "nonce": "0xcb37c0aea0c14c4a080efb153eb0f0a684971b62bfc8f0cda79e2d109fbde130",
    "signature": "0x67cafd5414e76f6ba4226e61e1fceb5a5172b2213c1c2380c88468441e0aca8b7f7fc7ec6a2328c9e712620e94cf98d79e42b921943de5422369399170345aa11b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}