{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "558452493",
    "entityType": "User",
    "nonce": "0x9387179821d3753f10a84b84c94594103416fbcd663e2272cebf30bc2ab58e7a",
    "signature": "0x66b588b43c675dbb995b296730b1d5e1127ea96993c11612fd22afd8c13edfcc6432805f5b9d21ba71e195b0f81f3760e2d217f9a49f181704954a9b302c5bff1b",
    "signer": "0x27eB4b469aE053b72c26B3e9c68a655390Fe24fB",
    "userId": "42216"
  }
}