{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991601",
    "entityType": "User",
    "nonce": "0x4e40cf8b0b57bead1f716c2fdbdbe212496fdb17c9517359c97f1e87b97ab905",
    "signature": "0x4bc159978accb2697560bb2f02d3c1467c7e1a224d9fd67ff4e19c20b12e0a1e4af42a3f5dcdb7bd3489fc6f640118c89660b6b9ded6cfa570a443022ac239271b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}