{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "905219052",
    "entityType": "User",
    "nonce": "0x511da5ea9674c427dc3522dcc390134ed75fed861f2675e0a9ae1ef3519e3124",
    "signature": "0x2139831874435bb2306303fc20b156ab7a03121e1ff81391043a456d39c2a1e13c1dd77ffde823d1de55bc2bba68578a0a7e1b93cb0f282666eab7199255e3711b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}