{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x6b43b6eb3d544d268e2de44938593253d6ca960c1e8079f6581f98497bf683d8",
    "signature": "0x71d65be8fbca63a65650c1512c4f9d3e18e8e3e01b8e98f3fc423c2f66bf9748606f0b261e4f3923ae8eaa29644de7a4657c6d1c209e563ffa4bf93845bb5ea21b",
    "signer": "0x80039Db0B0400D2699a0A8A5CC63821682080654",
    "userId": "580920017"
  }
}