{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "768878983",
    "entityType": "User",
    "nonce": "0xe163590675076b81727899e5172eb54ee0e618ff772a1064fafe4ef15d74c858",
    "signature": "0x9c793e3221266ac00b8511ba81d3f3d518583f3ce222d0dbb671b73d417780194c78e13eda14f19c22ea7a64317c4e89713313375a8c143b1123dab9687f9f9c1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}