{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1421388",
    "entityType": "User",
    "nonce": "0x8fbc2dabba1022120032fa012a371387051380f40ebc8ff8c626ecbefafe079d",
    "signature": "0x8747fcdbfc6d5627e9b56704fb39f42e8faf99fb63ed26807364b73a05a2f9724b34ddb2aaa7141c9e5d9b3bbef4686e2c644bc77595c2f16b1f24ba037c95d41b",
    "signer": "0xaFdEC27229de1023f5322f4Dbf0e874dC548011F",
    "userId": "817564020"
  }
}