{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x36a5fcb35c7f6011825f0fa7e49c6f7a887fa0270fa9fb1bcb95f34a6457bfb7",
    "signature": "0xfbd37ca71e005eedc75b54d963de18ddf75ef8703a22e886d41a5c4ce09ff5217927bf38d5a8d4a586be4ee091c7b5bad258ed70b32c0048a2dd0bdeb6899b531b",
    "signer": "0x3029f927E4a80DE690331AE2bF505dfe7848F9Dc",
    "userId": "87628189"
  }
}