{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x643ccc0ef1ddf9117420d2c438eaee79f5382e0836098b2d88e667baf95a9082",
    "signature": "0xcc3c96be6b90cd7f6c94a2178bb6b5103d68fe0a47af59a59317329378758a276b363d89fbeb00472ebea011874b6d9676f38bb37791401e1f51f9dec4ce966d1c",
    "signer": "0x296Cc30500F39a41B5BC8bB7aD257582B447e034",
    "userId": "839546581"
  }
}