{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320009",
    "entityType": "User",
    "nonce": "0x5e9a62c5857cb29af4d291b940bb878e607c1c1a63fa1b5efd114269b52c233e",
    "signature": "0xef84c11a4c0d5b510244f239332173d12b00f5b3c41075cc3ece43c8fe97c409576bc6baa4e52808a265bf001416a80c338891a13db020c9d9cb4ca2f80645d51c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}