{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "997911717",
    "entityType": "User",
    "nonce": "0x763d00182b42210807a4a7630bd248995b40acdbc19805a5e701dbd0f1bece5a",
    "signature": "0xe3a220b037371a62ee1745b44fba7e0e5dcee5dfc4875e16aa2e2831b5b641f5693d0d5308d09f5b8f2b8dac1044bee0f46b8242ae41b1fc30b8e51c69796d4e1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}