{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "193671",
    "entityType": "User",
    "nonce": "0x4e2f5c0cbc661db2372b094c5867ec1106db068469f8b499178d57fc6a46553e",
    "signature": "0x5de3662a867e7741f4a5e4b2179d4ba81446c540ebbb9bed393c0b978acc2c903f957e0f16380bde150312bf2e1063517183710c7610835c30e123c72333b6e71c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}