{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "256479919",
    "entityType": "User",
    "nonce": "0x3a9cecef26dbcf455f706bd9f89dee0adae47bad3bb54b617e46a6a592cc16e5",
    "signature": "0xba3168165f300be4b2c995c593075e5e5f4cba555f8458a6523f166eda03505d164a542715d178f49e22ab3c5afe6116f9ce4e3f41507ee603fe59eed5a08df21b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}