{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4ae9d465485ec74e1396be2b884a1f8045e3d50f044fc0cf1869147bfedb1098",
    "signature": "0x2d195520942762aaaf5da97356d4077e22cce86a290ee84ba014a4026c0edb9e34171430a6daad7beda7bbbc2494043db522d60e03f21f3ceea61d97afca4ed01b",
    "signer": "0x4859cb73a2827537B204400dA4826114041Ea722",
    "userId": "230937295"
  }
}