{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "66453",
    "entityType": "User",
    "nonce": "0xfd660a6efc727ac68be01aef82d11f28a098d1ea0ccd659b3bee0b250a9accd8",
    "signature": "0xb0a208a565e29050bd4a20c1c74cdfe22e61bca4ae7320f7d9e7935bbe83acd6797842a6384e7f610d3f54b8b3e050aecfa025ff7aef3d04f328ca2639bbfbf01b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}