{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0xc3df79403e249316876010561d95e2ad370c3340804437ba3c99d05a5eed0436",
    "signature": "0x49ee65fdcd2d7db34d25df3dbb492d90f3a968b96bba75fc1c78863c1779c1646c78d018554a41b81eaf73a2c6bbb984f9174dcedca02bdfe7bcc11e202721011c",
    "signer": "0x2426F92B61A105edDd0F1306A76A1dEe5E4e6EAA",
    "userId": "307005748"
  }
}