{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "347885",
    "entityType": "User",
    "nonce": "0x75dfbe3f18cf93414d9433ef899d7605943aef1e6c4ec5842f3f3e9187333a9a",
    "signature": "0xaefac465d2b88dd63b17741039db1c785642713c9dae88e702cda7700bbfb0797ec0efcf2a18696fb87d6bc7a194eeab75cdaedb46963f83249e5e973072d4501b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}