{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390992303",
    "entityType": "User",
    "nonce": "0xc17e680c5042bb841959cedcd36188b685604a89804978e786d2ae0b94d548f2",
    "signature": "0x3e8d0f13d98c487dff5e9ec5b759584b3d3a351515a0b83171be99e48c2ca7bd10205fb4f3d5ecdb6019f47283c65532281b0a68554599b0c4ac613463d74d731b",
    "signer": "0x9436FA87F6c8C3aa9e0F0fc7960566dEeB9e23d4",
    "userId": "2047015"
  }
}