{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "199573",
    "entityType": "User",
    "nonce": "0x90927ee9a16d3be50eb5cfbd098914329c2e3d78de12d7306831b65c28c6aa16",
    "signature": "0x26a38bde5e7756571f87686993e19501846401823a640056c39af9b14a376a7f6615f6330c7ca9e6cb532b3d7063e982d28468cafdc0e3139c052bd49bbb950b1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}