{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x930490966b3bb269c82904e51cf2bf29120ea2a38705aad4ff1533acd65c53ee",
    "signature": "0xaa6da855077856f795065cc3379e75d169e69a791405859dcb8f81b7eaa112991d7a63839c1f268fd64ed13fb375eefafc585f400ad2bcc3bbd34b38dbacd2b41b",
    "signer": "0x776FC9416d3338b25E1cbC297e10B7d871211673",
    "userId": "294359809"
  }
}