{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeef45e7e63051264c1f305b3cd124734e4bddb01f087f3c3e7f2e8bcddff7294",
    "signature": "0xf4858d4f896634c47b47d5099885bf0c7c9f685dff5ee1ea228827b6a75846d22748399c387351b8e5400d6fecd52091b879371f15b7dd065ffcc92c4c9f27ce1c",
    "signer": "0xb4E73C0642f86aA77C366Abd94586A5810D73F85",
    "userId": "727783207"
  }
}