{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xe3bdfc5c5797ce15794a2f8405c43e5ed66a973d2271f223412409162f092b8c",
    "signature": "0x5a057b222cc1f37676b6e7c9cdb6a110c09bd5882292d08dcd920044a3f68a431f4a33f5cbf3dd48e5ab6c545701743968cd3ab446c651cd90ddf2a50b4eb9631b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}