{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "290283513",
    "entityType": "User",
    "nonce": "0x6883a81de33282bf9a18b1a5823c65b2943861a5682c2137f48b3e539422ae01",
    "signature": "0xafbc2cc0fc8522b30182bd7abe7ea4396d0e0bae0f2bfdf454226bed2116a9d85af38aaa725560098df52260a8ce052b31bae01f5913fc938f037eb7ec94f1501b",
    "signer": "0x28E041745695914518512137a56c9810034C10B9",
    "userId": "134529"
  }
}