{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x210bc996a11ddfbbf595ee3ff93582e857bd5142eadb09d0358a0f16518ea19b",
    "signature": "0x4c18eb755716804bdb5c87789c4ae44335d3b12714ad330a6c5dce195a879ba67c822201ffb8dbfc5a957cfb850a7013ccb4b019389db2ea4062f4d4a64b55c41c",
    "signer": "0xfa1f98f0530E55C2BEFA45f0F1B3A699b4559136",
    "userId": "149566028"
  }
}