{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190942",
    "entityType": "User",
    "nonce": "0xd1a83f4290fe5fb01c168a69c0e756a8337269f21a95c2fc4bd4f1a1f6974f5f",
    "signature": "0xdcbc9283e6c9c11fb33bf703402e1adcd741f3c9a5f7600cf8c42ae969eb0bde137181d3e1a130f7dce7d5b8d9d70b44d3584bae1a881567e74abf9d286be95e1b",
    "signer": "0xb15d7053c985Edf1d74fFc9893ab67Fdc2B33090",
    "userId": "211545300"
  }
}