{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x12b57ac4bb90bcd94cdd17e44c4afa3335508117136d1f904e49baacca913488",
    "signature": "0x3e1061514364fbbb39d44669e8aa8eb18f5cefa1ebce7e2af1edeee37fe63c305008050207a29c10cae93ef1133592239f314150c0e934a2cb76e8c3bf4551021b",
    "signer": "0x49e936dc8f764055F1A37Ca3e07C03F640E49079",
    "userId": "616832616"
  }
}