{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "198051",
    "entityType": "User",
    "nonce": "0xb7c45c12fc3977195ee7c9fe21f3fa171919c3f1cdaefe03956f11f436f28ba5",
    "signature": "0x5ebaa899c0cfc5a5ef79c1a422efa442512ce6d63aeab9b488a33dea564af18c647abd496a15136d770e462d53425f1887a08c735f689288b3665290a084be7d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}