{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "714646433",
    "entityType": "User",
    "nonce": "0x9f1de2d093bd5996c21327941b716b3fe71b2e68a1c91453985e9efa1dc97413",
    "signature": "0xdc5d48907d76ef5a42d4f768cd70099ae367fb0bdf39c4a61d1843b17646f92734f33f72a94d4eeca43659c47984f8829367003f9284168d0047a3cf7b16c7651b",
    "signer": "0x721f076D6fdC57634d612324093cA69B47866867",
    "userId": "303348966"
  }
}