{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "339449",
    "entityType": "User",
    "nonce": "0x3f9ef4f082e18d8dd34f1433c8c1d87ca7f98bafc7ad2fa0a4b4cdb58197a504",
    "signature": "0xaf044178c85415f90be86668071c7f9137d9135fc0cd1cc38da1694b07760fcd4991f7f42a0381c1c095d672f39493c7acd9961ed308c11173aefc4f5df1407d1b",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}