{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "509171098",
    "entityType": "User",
    "nonce": "0x2236b33c3d9ae6ec61b3f3d5a5e9832c41e5fb85b53d719ff73eee7540838759",
    "signature": "0xb89763b5a7dcbc68b1ade1f9b85ae93aba58df71c2bd98d666c2147256a07ccf155fd1a306eb8d96cf6d53dac61e2192809fdb7963a9345bceec668fb4e6ceb41b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}