{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0xe8504061ad1706481088bb5f9692ebdb09547718060d94c4d474b3c7aa928918",
    "signature": "0x1e9be47521251d3fc93dad24bcdbc1af41f086e296cbf7f904cc89264366b3ee3539d3273d1b904ec57ff1f4f385354bc33e822efdf28b3cc033c4bf0aad3c311b",
    "signer": "0xC15685282b5cF6e70cd43c8E59975d6599a5975E",
    "userId": "838826253"
  }
}