{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15711",
    "entityType": "User",
    "nonce": "0x3fc61fb8f22519d4f1900a557a1662c6c2566f9f59d302ca1da8f923dd9e3588",
    "signature": "0x691149f4c97569309e77fb14e8d5efa80e6f5bcbe14c7e00842b3e05ea20d8c102819340c77e0d7ae45a6951cf69defceddc8035ed0c1eb08758d26072836bf71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}