{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x178c732d7e9993afcda170ed209e9164a5264c7d456007d26fb9f6baa9e9209c",
    "signature": "0xfad12c141565947597cce20e7fa133fbf889cd6b664df59c47be0e09e2c8eb1546d6262a509417d44444dc76c51f276b8243d8c44d052b695c90ac1332b33b9e1c",
    "signer": "0x499499d5bBfD6d922f23bD8B3CFEEB75BbFb2aDb",
    "userId": "952795514"
  }
}