{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5536ea1e2ed01a5b3a963cacda6485e00d78227afc113b6af715f25cb46f45df",
    "signature": "0x1b5827960f5e84f96e9a5362891d1e615a70c0a5d8e9a3967da60d2bdada5352193cdda8fd6d7a5ab82bdda2276b46a2bccf9a643471548f3a2752c03ff7fd6d1c",
    "signer": "0xFb889eCb7ccb573f854D98A256511C27F2211D50",
    "userId": "318141912"
  }
}