{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xb8ee6f3d9b550fa1f27117befad0a72858691ab8ce7a94ef905a0da61a0f82ca",
    "signature": "0xf6db702a2915ebdbff80fa0a4817f2e5347421109ed7913ce086c4e0242991f63068220e12de4f6f5fa1def5a8fcef68339c9141f211ce467d8a4e0077fa5e6b1c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}