{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0xebb8ebbe46a2735d73246d86f5c132739b3186480dd366f5fa02667dc1a92e38",
    "signature": "0xd66d09d6e4948888acb561429794d88bcbe278839e2ac2def4341ad361bd866a127880c2ffb04a20fa6bd646e57bb1b7ba3fda63f46f67255b008200e3c3af411c",
    "signer": "0x6F70A783fF23fE56ea47FC56eA2C0C0BDc4651A4",
    "userId": "868622360"
  }
}