{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2715",
    "entityType": "User",
    "nonce": "0x99dc2518f6dd6fcc2f0dc9744cdadbf834c0a4453cbdf10633f8ec87cfaa5679",
    "signature": "0x8d60f507cbf320800c13550b201ed9f1830f609a800779b4d81d625d09e7e34c7da4268b610ef53704348186f477ead3d7e40fb7a22efae710317b9e695dbefa1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}