{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75148",
    "entityType": "User",
    "nonce": "0x3a9d504b391104670812f92215d88c3c8be084cb93888020982c6a094c1f221a",
    "signature": "0x7c5f5ac0e6e50da9f593ea4058ffcb3db19eb6da0f38cddb848d6fd57cce51857205b1822d8074133f330c96a8e0163f3d52b0fbb93fdfa4ead1cc278174b66a1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}