{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1509256763",
    "entityType": "Event",
    "nonce": "0x973d6a5a62db70a2d0b77e9be6019070cb9ee0346d91b70bf155dd9803d8fc1f",
    "signature": "0xaa0e2bce8aa541ec1bf6d58f217ef982a641fbcdd9380059ce1081179e2a2a5c1e3da86fe9a359d9ccb4cd6813188d1fb47f21b87ffbd04f8eefc35e591f57cd1c",
    "signer": "0x24A86423CdC7D473C414710511851BFD3F0DC67C",
    "userId": "700900251"
  }
}