{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354535",
    "entityType": "User",
    "nonce": "0x95516abc088d5cb0293be8eb96c85b24131cbb2f4b4a1a04da34e4cf1be6c77a",
    "signature": "0x498f7df271119f2780ec0e1b5ef9f8452efd7bbc83bfc8668e8193e9c0de9dda35fa2ce61aba899eb10f475bfcc6ae08b1c894ab0e6f4e572ac4b47352c03ad31c",
    "signer": "0x28E041745695914518512137a56c9810034C10B9",
    "userId": "134529"
  }
}