{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "278763",
    "entityType": "User",
    "nonce": "0x1629526339f1178c31f0f4ef61d614b7208cccb34bc96554d4adcceb1cfc3ba2",
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    "signer": "0xB57F94Ef9a26d73E8b35D3f37FccD18BcC7eeE00",
    "userId": "850416615"
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}