{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15980",
    "entityType": "User",
    "nonce": "0xf20072fb4b4bad141e6d1f488a22b6875b4150c010efa90ab11a96eb83518132",
    "signature": "0xa67f3bbf74acc6d1282db23f1aad374c307803d689d0406ba6ef2297a149b4270897a89c90f1a7acc53f0897239f286781a5c201be1a0ce62d7ebcd08829a0a71b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}