{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337125448",
    "entityType": "User",
    "nonce": "0x263e13395ca1adf64f5505224f6a26a17b6b8347032a262220178153cac1a374",
    "signature": "0x7336aefe251ad238fdac67b545eaab8a090850be0664c81b05a21be14c6cf1b236b9330dbfe923129882ff19ab19b19be576569502896bb060c05c0e6f09d63d1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}