{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "677399",
    "entityType": "User",
    "nonce": "0x15d0139c3e883b123a5b47bfeb6261682c0ab48f8e5f4029a9fe3c24e831e57a",
    "signature": "0x89814bcf35151c62f00b84def91b6c35318c1427247a752d60369379ddf579ff53261ce83d31fcbec62891576785a4ff0bdf05b6c649874e976bb82194bdadf41c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}