{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53513",
    "entityType": "User",
    "nonce": "0x28e7ce93fc6d1c665fd9f80bb05dcec5b00931d9a9fd0baf155117afbf3bf90c",
    "signature": "0x45fab5e82f6266a5e23b9e07888ac05c510a7d8d7f5f63e60676df3cfe19139d66cdf67999fbdd2a9cd0427e348e7a1c90429d1429b092e1b40637ed9f27426d1b",
    "signer": "0x16a2B57b3b47956466fEFd44Fd9bD698EE288453",
    "userId": "944190091"
  }
}