{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "135340",
    "entityType": "User",
    "nonce": "0x597b55fd6ec690a0c441d5e5683701c4d8710d2d9d4343409855459c335fbddc",
    "signature": "0x657fcec1a7d3a3da2501b0cc9e89335507f847faa8eb84ab842589b6955d42b962cb6024e2ed922929cdcf1e713cd974d2b6e35ada9f2bb972ece75db70454261c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}