{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1511688",
    "entityType": "User",
    "nonce": "0x300c27c99beae1eae307b332be34ac126d063c65f7f05de1f2b60e290bf8cf1e",
    "signature": "0x9e8f89c596bba9e2d0bc634ce6d5076a0cfd3267418055d618b1e44dfc996e444db3297372c4af3cdb7b9636ba144f0b46676511500cdbe043b88289a2735cef1c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}