{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x554650c8f16cef5e668fef84cbd05a0cb9a88a1de1225e84771e6318eaf92075",
    "signature": "0x29c3f7e741dfaa9ca01f85815bf6a5f590aeb6c2948afc6cbcd4827b5139f1a82e991c7d04716fd5a0a4d210297400a9800bd363227edd709bf09a2d30d41a881c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}