{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xca0a8e200e248a259dda7d6d73ebd76ade30bff59a2d3e6c592b56a055b565b9",
    "signature": "0x7f0023b218a8189a3579d475f62c1a9731b86b3006a96f76b9ae2a00e1b304ba0f7a4fb74f76db1e8dac0b834f1d100ac4beea1ffb7a742b9e738212941223141b",
    "signer": "0x55Ca96919B1a0a44c9e552ccB87CfD04cb5FEd9C",
    "userId": "899724207"
  }
}