{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100976759",
    "entityType": "User",
    "nonce": "0xff03a7f8a2adc067f9e041da61d403dbfaaf62b6f8e70c3637967d18f28bc137",
    "signature": "0xd64dcec1ed680d2f7d6981acb663db96d2493fae080ecba7a0fdea0f4f3f98e304d44002d652b3ff65b6099ee4a41ec5360e5708c274a6a4b151a34a22fcdfc41c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}