{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "731078861",
    "entityType": "User",
    "nonce": "0xffefe300480d1c5c08cac1dd257d6e87ffed176561f30f61457a3af9a73ccf53",
    "signature": "0x105956c75045023917b3e975bbb8b5589945d72a4d7cd2b725ca39e7eb14d0b53a78401ed6a09f84627166d7e6cc835e019f22354840b8e2c434b0b7383925821b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}