{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "625201833",
    "entityType": "User",
    "nonce": "0xeefdc81423db028da7036ce751c32f13d2a2a9625d8bbc420b251daff3565dd5",
    "signature": "0x69c5e272d640a4920e6685e545267a195663beef601018cfddae0fa2f402bdae2d1c5350dbf31652fc656793dcf97dcf0b5637f082d180af60b1ed8b35c9310b1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}