{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "72819",
    "entityType": "User",
    "nonce": "0xf02a136228e772985bbf7b1392ffbd130a930db9a063b04dbc43d0fb64a073e1",
    "signature": "0xe80712dc55c294d3627534e82665d36d435b219d99cfed004212ba37ec81783f564d687b029ecee7a40ed0212b24c925a06664d44b541f779cc2d7fd44c1aed51b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}