{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2d68ff1d18c8b722a145ae42736c48eb14c5e5f004e2d776645e8fde859b9c7a",
    "signature": "0x56db72966cc2d2b3964ff5f6e0072bc393edab9a625645dbc7297b13c5c0d25b7c6b3aa25c81832c1fa1b31ae612202fc45aab3bfe42e935f7d7a18a9a058cf71b",
    "signer": "0xE91fe5517ec16B7d2b49b4e3C2A6E576D1B35315",
    "userId": "86508956"
  }
}