{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "675830993",
    "entityType": "User",
    "nonce": "0x64e01f36645e74f6345ec87f5a5b7d967e7e9b128eda3f679ac1ea56dd4f2db0",
    "signature": "0x2f68ec1757e20e95b9520f09a8f2b6c81ea17f03e2b53c36d3a51ed6042cb3be61aeed04a3b00e6d7b68f0c54d5c7e186f2fd2bad8dee8abef783aa067c221b91b",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}