{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "666092734",
    "entityType": "User",
    "nonce": "0x8fe637d757ad836a1cf5fcb29d7e0d475649139c05bef828bbe9aa421d5f9dc5",
    "signature": "0x2e2d1b91207c5087229ac038a50b2aaac591fb1f7ce416b109e08a35e7f2e9092711f06da7a8a3224f1820d5ab9e79158b7b9186c4332b570041a6a68944660f1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}