{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0x69ffef10e4a7495f9273f4f0388ddaa5bfc4df2c0e12d73413f46a966731d480",
    "signature": "0x24512aa431a64df26dff052d776fac34a9c98659599248f7654ff5c59d6f8b2a28999508ff5c84528bd3b68b2efcbcd32afcf5086f8dae45f98ce6c0db03ecd41c",
    "signer": "0xBEd052148865fe7f70aa0B2c04705BC05e77D4c5",
    "userId": "490321291"
  }
}