{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1645731",
    "entityType": "User",
    "nonce": "0x30642c8168706a3f7874dbf9f5dfee04a9a43c376806def9e8e9efc68cf3f975",
    "signature": "0x5f396c3d3c1ef0b9be49422ca01e28be1b55f09217576da8ac8e07994540528b66b7dac77497feaf21320dc615274e66523da2743ba652a17144226cc68e76581c",
    "signer": "0xE3CdfAFd2999c1C06c139E932b0515a9F0B07382",
    "userId": "29797210"
  }
}