{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x915992f0f539e6660c56326c435a5e2658de2e8c4905005c967fa4331e983574",
    "signature": "0xb4ebb7bac0336f760e6d9fa1407fd76661729cc741c36b35f534ff9d73dc01e538ea169dda6012bab5d7eb7313986950a5acda6e40f18fb39bdcc3a8f12cd9b31c",
    "signer": "0x2111090d8E8b317423779F39Db57A1F458266044",
    "userId": "154027249"
  }
}