{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "69500",
    "entityType": "User",
    "nonce": "0x4d066e955dfa53ed455631bcacafc52e08ff7df35fc055a951964018427b9442",
    "signature": "0x1ac85403a3c924a03d8a2e5943d717239f0a60a36ee1decf6e76069c2496421859214ef4f8d0784527d22f6f3c1467f425114967566b97c0f187d3c890eed86f1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}