{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "145528",
    "entityType": "User",
    "nonce": "0xffc1fe0ec206024deef5180008f6e8753304c473033e660f08e980e5226a1a71",
    "signature": "0x5beabce1778934545f4565797e263a0c3b9d81c4c6f787799e409985e511823647b7e6bdacb56f29e62b7ce92dde46f9ab2ab96775bc42f92afb7d9de5628e8a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}