{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0xce15f912c3e8b081bd2c17b9352d17fc3663fa2ec12476d9315962669af25e6a",
    "signature": "0x48bcbab46afcc00c4601478252d4b63f2dea904592594feea0d3a3bfd72438732cf48399b0e16a18724ad7bf7bd9723324363ba8a7efed972b4c0b31983a14a01c",
    "signer": "0xb15d7053c985Edf1d74fFc9893ab67Fdc2B33090",
    "userId": "211545300"
  }
}