{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd50a83fd697e591365c1cc89d3f5fd1b53a4e2db9bbc03cdecf272a972efc53b",
    "signature": "0x2ba5bc161173d220dfdcb21fe2aa3c5fc96e8a9282b0c61ae0eb1b04b38664ab1c9050f05544cb603458ed6325b720e79a89e71dece9c9466dbe34e3522c1e461c",
    "signer": "0x8Fe3D1d333492094a9393A7FA75E39195Ac1D017",
    "userId": "910311542"
  }
}