{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1674010",
    "entityType": "User",
    "nonce": "0xb118ac90e6e4b93626b0c96e1602648849e254b4a12c207ed85eb2b406e89e80",
    "signature": "0xef767e0a520e3fa6cd0b05bcac65c2913ecfb17bb006745b2f0c555a126eaee12251554831137453afd7ec5b37eb8187b33a29aec78a02a240fd82ddd6b0934f1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}