{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1512626",
    "entityType": "User",
    "nonce": "0x2eb99674837b7649cea7734ff60dd8ddb04e6a4d036dee95af61ccffe1ae09e3",
    "signature": "0x5517372b158c90060bc0fd67f53ffcaaea2830905f6d1151c4c11bf18d559d2267cb65dfd25625a30c314120910769db4dd114008eb2a3076ad326c1b5464a381b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}