{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x76c50000f4eb1af08565b7c6127b393c5fa7f31cf0368c19ae52c72fc5242123",
    "signature": "0xfeaf0196a6dae72e499917506ec2a6a6c127f97628031179956414931daee9b34ad6f5db6ec92a478dcf35e9c827530fc6269b774d51d3b77c4c52c960227c9b1c",
    "signer": "0xbA5231da41B64fC270444f50999A73f927f23256",
    "userId": "28116771"
  }
}