{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15991989",
    "entityType": "User",
    "nonce": "0xbe7ababf7af818714cb40ab51412a733eea88583c430b2bb4a15ca5698725e53",
    "signature": "0xa613fbdd7f8512c96cebd4ca4868613e53264734976c04a0b0525637eabb82f647764b1aa4cf8c35a0379d5fdf4fc14a36542036a4ea813e6410cce01d5ba1651b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}