{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2ae6bd7409b5e8c3d232b80973e186e9e57812f910ec2bb2d976d07d570d3b00",
    "signature": "0x9c3a1cec9ff8835eebf52285015e0eef574e7007c859e156c78847993edcc92b55a46c8c4abd83d8cf5d3c85a9b9e0568613e46090aa54a23cb6e3913d6d1b511b",
    "signer": "0x322abE0CE2af9b8a0d95D9632d5d7Ae191C4F285",
    "userId": "98721547"
  }
}