{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13721",
    "entityType": "User",
    "nonce": "0x9da034eb4e8e9115f08dc6ed411d26539a12c90e4204adab61e8ca5e537b9be5",
    "signature": "0x2a820cf2a9cfe0125fa6ee1aec155c97beba7a5cd83600b0e63088af77b61f156841b06c79c58dc67ef7d4ebf54971697e402d0fabed9ceca08bf63ef4d790ef1b",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}