{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "551621134",
    "entityType": "User",
    "nonce": "0x23e1f937d24bc593c839b2ee0ece3c66d4f2a27bef9a740d1f53d1375bedf59c",
    "signature": "0xb2db4dfda52fdacde446929f908dd15bf82799253cd99a96184d5ce4e34710da327cde8b9ded5560f1a2bfad5c1a28690c334906baff91afc5969cb31d7a0ba41b",
    "signer": "0x05D4434893815F914255C028DF9Da0a3e11FE0E8",
    "userId": "181835656"
  }
}