{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "858479840",
    "entityType": "User",
    "nonce": "0x4ecd7a99bba117c8f0c5e019c16fb8b6db38bcffee0477c97afcf0a115048b9a",
    "signature": "0xe43367e17c07bdd1f98616022e325dd01ee17a1060b466c5f1361e27f94ea8895a77bff4596b28c0032f4884ecc7522e22cf333ec9ae6fd79ed9728610b6c25c1c",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}