{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6c24d4b468acf9226681e724152f1197b575cca5f4cc05a66a2dc66c4c2380b4",
    "signature": "0x1308d3179f3d0c4a8f1927b948ebd455a73bba77e77eaf8091a2d9a274370f9e1ef2698761f7669d30da50750481759b79ede202b665a173a489539ad9a8a06b1c",
    "signer": "0xFd8a5Aa98c6580ecDEd765Bc2FD37327563E842B",
    "userId": "146722548"
  }
}