{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54078",
    "entityType": "User",
    "nonce": "0x149365952dcb18632121b5bc6230c6d78b4240f460c30fea6156afb1a20d504e",
    "signature": "0xef8c76656210643aba00509fee1485f7345d30ebfd5d9e42952566bf3669012d6c1d7167cf96de221297b332241b27704f2fde96f1d6a0d3b9bb8337710178161c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}