{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xec8ab9e1cc1d4ad3894492f9b064937b1de3b6f67fb3e1d0ebab2875d8e87227",
    "signature": "0x1d127d38ffe0dada0f1b73e1cb2ee5b702184195fb684c526c82485d199a652f3f71b5f94118e3e2326907f57d5cd80d74117e8153064c46d3ebc547b0e11f371c",
    "signer": "0x30867E5787A1a536Fcc24aD986B82D6065ad5Ea2",
    "userId": "63213223"
  }
}