{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "11440",
    "entityType": "User",
    "nonce": "0x590ba5cf148e76340fd38b57e3261903cedbfa01c56a6be7b1facb9d69869af7",
    "signature": "0xb17e063febe837492aa2647a88b395e618ec4ac744060186be1b0ded2eebc0b200fa52f7ce87a4103355dce81ef370b016a47dd09b7cb05b9bde6499575522691c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}