{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0xc87736e9bf5b6f7b1e7004aebc63d79c6ca07b437f5038b7634685594f723a8b",
    "signature": "0x8f9ddd204a7e606c7dd52d9c2eb5f34dbe9336f081db9b141a5c7b297b3b40c917dd48eb0334acffc10f2dca918974569bf53be6cafabe8c1e357a2bfe80ccf71c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}