{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138345",
    "entityType": "User",
    "nonce": "0x645a6de679f2d2bb06fa19fe1280f0e8396e974bcf517f5a428af492566bc38d",
    "signature": "0x46cc820d738483f6dd22bad6986e6f18eacb77a86ef89f99ac086015c889b8966c38ea83f7e662b62d313130d10615003ebe9233518f5549ce96c3986e62e9bf1b",
    "signer": "0x9c1a2996a6DCe12e947BD7C8A755b6150A3eD5f4",
    "userId": "474113241"
  }
}