{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "671823103",
    "entityType": "User",
    "nonce": "0x5f15f5f0feeacd005b19a4ed523f4438e9980bb78640d94e2e609266f7042559",
    "signature": "0x6ae87426db9873fb2b1e945c8e874203a4ce56aa27ea7a0d144a224af79ed22646c111ad10a3b946913242ed3b76d435b908328b074f5ad163cee484570f55eb1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}