{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x72db6a721b04e8dfbab259b834056717045d68386a77289fe80bc8b72c58444f",
    "signature": "0x3bfd51e50db814dd092aa1bca1761fed11081a5892bebe3d970ecf79d3e5d5465de024984d1ebd681c1b5f5002fdae73e1696e03bd169869fbde81e7f13c82501b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}