{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100638",
    "entityType": "User",
    "nonce": "0x1f1084abfe1555d72446449989296ff7ef92dbfef00ea8d5fa28b8875a75e754",
    "signature": "0x4b80dbe69542f0720afa2a7d2e7feedfe13ed09d3e4fa98d64b6898c1b0d2ef34a90c2d79ae19774ad57a5ac2ce64473f67e3249491830ecf7885d9ff603ef661c",
    "signer": "0xc3e03c21664729d32A8E77189667f4cC5091E233",
    "userId": "498109"
  }
}