{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57868",
    "entityType": "User",
    "nonce": "0x0211c77141622d4bbf3cc80459dc487bdd55a49aed8b99e62214b23e8f839270",
    "signature": "0xc68ef3624306542a6fb0e8a5e9348c46bbb9d8698e77a94ebf94d38ad80a9ded313d4eceb0f079386663bda5f3cd218a6c173c2042b0a37bf1aad624c2ea5a631c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}