{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "617033434",
    "entityType": "User",
    "nonce": "0xb8f32795a4a81db068dadd1e13dbac328f115653ee70f4215ede57f4a48ca543",
    "signature": "0xb8c6b6d1545611dbb86ff7a1322e7ff30b2add3257882c66f4196a59a21136252ffc0f7c45ddf280ab11fa0cd65b337175d3c35881552d9e24955b5797be25e51c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}