{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x45d1316dc7719c3d707ff231f39c0742a877754cd2250b0b7cab4626f03954b3",
    "signature": "0x9143e8e73697f84f0547bde29064be3c18d2f543a0272101685a98441e399cc467ab928a8a7fb0a79d1dcd19747ae92e2598fc4a110294764640d41d6bd06c681b",
    "signer": "0xe2F607C452a1639C45C92Ac9a1236661EbC1EFF9",
    "userId": "7377126"
  }
}