{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210611",
    "entityType": "User",
    "nonce": "0x86902ef76c58a814d3d4290b04471be55887ef4b97a4acdb34dbe906eca25e57",
    "signature": "0xbda87fbcb935ddc9c21fab78b2c740ed46819960f73d4288e73ec3d00faf0c3c71110e2645b1abc02d3e720807eca343688c91904e7a784e32c259246f153ed91c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}