{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x56661f3de282ccbd74e2b18089f59894b754de8d3f0c9951fa7e0a5b078df051",
    "signature": "0x42331f6adf9215633a08bc441ac0c4b3116ee02129b9fce3fd6d72bb84cd01012e75e849bcbfb984d5aa2b70f66c1ca699e358527f9f23ad1fe9806f123662f11c",
    "signer": "0x8C7bee798c0AB93Df67Cd00879d67b02274644CF",
    "userId": "855403"
  }
}