{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325440",
    "entityType": "User",
    "nonce": "0xf4fa08f2d5cf1c0d2644116abf1a7e88d114ece2a15a65bdbdd2bf2b6dcbafde",
    "signature": "0x606be3d1d3bdcb06c532edc388fe275306b8f57399d2ea319d3b9b0f68e1e3121d1f725f3758296be1f14ff55a6211fe3960f82ea41b1265394e7c6f513126961b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}