{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb2d9b616fad898757087f98ecd3ac4c57366b51f90c73047aa393bd7207b7660",
    "signature": "0x53715aff1d617478fe43185567b905227e5340ab587aaa7ff552417f5cd80f5522b7e10e37e9a893e17340a88f5540b85604307b182599ac9d19e8588d3eaa321b",
    "signer": "0x436637bD14cdBAb950deA5e8ab694896216708Ad",
    "userId": "234122192"
  }
}