{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x5d761256efec99f021b8fd1d75d95e2bfcdb90c3200647b4e9b4e2eea2405e6f",
    "signature": "0xd5a2bf5d5258ac54e387d0286f6bdb1a087b6af53b216bf6aae5997df2dffa3d279972031a885c6ae068e8463e8edf6b8d730828bdd1d5ca1e46b71ec79648791b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}