{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6ef0d8b4dafadad8bf41382f50c639fa5f1929e1de0fb92ce52d9942ea15c793",
    "signature": "0x4f22181b78953e3cf2b52d8e13485b84edec7c9e93d8a96cd82e859bad60d7e93fc383bacf7a510bfce3b7de07fdb497d1e18489b0d1836e520867d4b2c425bb1b",
    "signer": "0x4B4356D9aB454Dd5241EFCA0A817E0c6304D8186",
    "userId": "900921934"
  }
}