{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x524cddc20dcd90c675bca051c0fa7579251741a9eb0bd4bec49fe6461d9be882",
    "signature": "0x0e7a2efcbd86d8291762f5b49f7596b571a8278ef4fcb1caa51c8eeb122a2faa47899b1dc438f987d7dcde96538f48e558a0b91e571af56af69a28ad593ec4c91c",
    "signer": "0xE22639FD840080b20889373FEa6060B4757eB9c1",
    "userId": "274627911"
  }
}