{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210566140",
    "entityType": "User",
    "nonce": "0x16ede771bd67a88f2f7d3f897f76e226e1aa575aacbc6087e33ada661b1589af",
    "signature": "0xfb3a10bc1c12cfb3833d9ea893837e6466b40a09cf71a0066b6264bb78fd47c35be42abf6ccce4a2e6fa4326227f95983951af5b5511a207234c18415a6dc8b91c",
    "signer": "0x49725020a21cF6A928575eE04a5506771Fc95916",
    "userId": "908506084"
  }
}