{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "296865",
    "entityType": "User",
    "nonce": "0xfca9e2ef5ba59e9ef3208c9de6b13b0d255c9021fc3de12cca83c09a1c8c9d47",
    "signature": "0x1bdfe7b70ec1caac1904d8892177c36e33b43b0ea9edcd3e8d0b98bea812ad1a1318818978085992e0504b7f0285bc512a8634b8cb4729242b4af119dab7c6231c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}