{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12454",
    "entityType": "User",
    "nonce": "0xe7ae3e81350c14e387ab1759eb62302b072aabe9b485ee9f2675f44154a29f59",
    "signature": "0xb4b5131b0ca01fb1af5a202ae420e1de50a1dbbac742182bfc41638e5949ca463336a99aa2be5a093c3c05102912e1723eb4d58c293a03116272941f65150c861b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}