{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "268900563",
    "entityType": "User",
    "nonce": "0x429b14a2f300f6585d7c0077f15a583f703c4e85126666e3ed024e91de060f41",
    "signature": "0x856223e76cd691826ffb9938c2a2e5bf81feb63535f4b274db45d022799dbe621ee3b04c27f1cbe432414be1d1d3db90195e167bc093fc88bc0090af1faab07b1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}