{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143871",
    "entityType": "User",
    "nonce": "0x3f6f7201e946fc86945666e0db4d8a4abc0899b11035fd03712d30340a997bee",
    "signature": "0x6e58e1fc2458bae34ee67157a7abf3c2b8a28664789bd40ff69921fea8d81c483cab4d00314cf71bfc833914be17f69c81a7db2afcd6e4ee15b9f7526e3fa3591c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}