{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9cc642499d2ccfeaf2a52fc87b180daa9e255f63fd451ea8aa8770d2cd615f8f",
    "signature": "0xae356561872969572f2211e14f9fd54b18f9b1926abd304e31fbcc27f689b0027c2e20d08d9eb1557497a21763fc25f92a2aeff83432da42a1be4697149f7dfa1b",
    "signer": "0xcA0Da5383A42F3742f10A6cB84023b2B4E8f5903",
    "userId": "111473338"
  }
}