{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "748067870",
    "entityType": "User",
    "nonce": "0x4fd01a1fc2f7c2b53cefd8de51676e4a38b5b7e166d59ef946ba08eddc10d510",
    "signature": "0x865b741cbb8a578d01e17528a47a94060f127d2e19fb080391bacea3e1095405188c9f14de67b8bc1121188bdf37f0b24897392c53eca156e4aba95b0e4ff9581b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}