{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951616316",
    "entityType": "User",
    "nonce": "0xc43a0d2e9178d871b18aa42583848daba168a1d17e90cb9492b1347d33b1ce17",
    "signature": "0xc70959d54f68c07f7effd6d15066257b4a3186370551288a82249c5465cfde0e7f22ba992daae9a63e2e63f62059b4374621dde6a1030c7fc09e2d9046b3d5251b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}