{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xae4c86d74690a3d9bd5bde6867fa82e993bbc2b7058c362bdd63650ea2742b28",
    "signature": "0xaaf850ae2b8c5045f12877ea22893273cedbd326437f7ef4c9b139d6498b5ad66f1498a70ce40e072878f79612cfc1eb0078a4d12ec5d81b9f3d8181609646b01b",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}