{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0x522104b6ca1c765e2b4b03b0b9ac15c3164e85557527cf3bce1555a134760308",
    "signature": "0x9511a31d1f690a2f789b989a822ab06a352b3cab6924dfb91f520721cacedaaa0d991ccf5c10fe769bee52ce1e3b24c237346b2b002c9574955a78cfb10323e11b",
    "signer": "0xC1c390791Cd8584Bc0D056AdDe5c3D747aA694d3",
    "userId": "395219571"
  }
}