{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "494018536",
    "entityType": "User",
    "nonce": "0x820158c79d9d68980ee1a0f2b11cdf268487d66edf0449a56e9c3058279d530c",
    "signature": "0xcb2103aff7a2c289c401c08e4e292d4509dacab4be91367065806a163dfb3e3b239b9ccf42851622ed95cf689669efcc85ebfe2c779a9e14842aac7cd9ead92c1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}