{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3028",
    "entityType": "User",
    "nonce": "0x4ee2b40465ea00a88c5a866151cfa838e8d11655a5b9934c3be30e8d6d315749",
    "signature": "0xd50cd5587d72e23a62603cd0ee699973452a1697590b70cc9da31e8105aad97b0e25bc78cf15e7690af4860255e7548e73cf5a6c17f2ae5c5e07f03b2112a8641c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}