{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "744340932",
    "entityType": "User",
    "nonce": "0x9b2454998d340bea140e9ac445365399ba9d7327884a99555f897b4f8d2314f6",
    "signature": "0xec8d72b4349669b2d4a0f2300e50452ed76a6173c1fc7117edcf5f35b27c67987972363d3ec3ad5b3288d3f20330ff372102921412297ad3e6497abcd9cfe6d51c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}