{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991877005",
    "entityType": "User",
    "nonce": "0xfc81a9e0fc38a1e4dcb7e8a5837464052b93048e50ad1eb71368467c6bb2cb37",
    "signature": "0x50d2fc5cade38dbe396dbbc9c4d077a2d04c5ad398b20e5733de1bd15dbaf2271ea480388bf94ddd35cb0a51468fa167f3395724fe8b311c2225a5bbbd3f448c1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}