{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18192",
    "entityType": "User",
    "nonce": "0x4f3429efa02a620654faf5b3bb5e1f42ea38674460126f5a7a4536368444817d",
    "signature": "0x4678b6e5d2f57cd5cb7e158b937ad81d10834c2ea81fa360777dfd8581f7ea0672139e61e1c07c402cafe891a65d0c27ca98fe35e92c66dc715051661b1389531c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}