{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "256479919",
    "entityType": "User",
    "nonce": "0x1c803d0ed5505e1c416bb6c3967380d8a1903ad3f5228266c3967af0b6851ff9",
    "signature": "0x6fd159f7d2e264c85b55299a42cb9fe0983e90adf8e2db9b37149e1f7de65f720bcd815311dbef2319868e510f3a275b2d2fb61562260af47967e37549973c7c1c",
    "signer": "0x9BaE2e1849D39772019b4AC3468e938a232f73ee",
    "userId": "948584098"
  }
}